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Premier League leaders Chelsea ruthlessly tightened their grip on top spot by punishing the failings of lacklustre Leicester at King Power Stadium.
Antonio Rudiger continued his habit of scoring against the Foxes with a glancing, looping header from a corner whipped in by ex-Leicester wing-back Ben Chilwell.
Another former Foxes favourite, midfielder N'Golo Kante, doubled the lead by firing home from the edge of the box after being allowed to roam 30 yards virtually unchallenged.
Chelsea could have been out of sight by half-time, Chilwell grazing the bar when he should have scored from an early one-on-one with Kasper Schmeichel, who later denied Kante with his legs.
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Leicester offered more as an attacking force after the break as Edouard Mendy made a fabulous save to tip away a fierce long-range shot from Daniel Amartey and Jamie Vardy headed over from close range.
But Chelsea, who stretched their lead at the top to six points before Saturday's later kick-offs, could have had more as Schmeichel saved smartly from Chilwell and Callum Hudson-Odoi curled inches over.
The Blues had also three goals ruled out for offside, the assistant's flag foiling Hudson-Odoi, Reece James and Christian Pulisic, who capped his return from injury by slotting home Chelsea's third from Hakim Ziyech's cross.
Leaders on a real Power trip
The Blues' last trip to King Power Stadium inadvertently led to the beginning of the Thomas Tuchel era, a limp 2-0 defeat in January proving to be predecessor Frank Lampard's final game, and this display was further evidence, if needed, of how much they have progressed since.
It was Chelsea's fourth win in five Premier League away games, and they are yet to concede from open play - the only points they have dropped coming in a 1-1 draw at Liverpool when the Blues played the entire second half a man light.
Just as impressive as their dazzling defensive record - just four goals conceded in 12 games - has been their ability to conjure goals despite injuries to Romelu Lukaku, Timo Werner and Pulisic.
No team in the top flight has had more players find the net than Chelsea - 15 - and the fact Rudiger and Kante, hardly prolific scorers, both registered their second goals of the campaign was further proof Tuchel's side, who barely missed a step on their return from the international break, carry a threat from all over the pitch.
Foxes' failings laid bare by Blues
It was another chastening afternoon for Leicester, who have become regular contenders for the Champions League places in recent seasons, but look as far away from that top four as at any point of Brendan Rodgers' reign.
Since the start of last season, no side has conceded more goals from corners than the Foxes with Rudiger's early effort taking that tally to 15.
However, they were torn apart just as often from open play, as evidenced by defence-splitting through balls from Jorginho that led to big chances for Chilwell and Kante, while the room the latter was allowed to run into for his goal verged on embarrassing.
They were just as poor defensively after the interval, as only some wasteful finishing, a couple of Schmeichel saves and some marginal, albeit correct, offside calls kept the margin of defeat respectable.
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Leicester City
Squad number1Player nameSchmeichel
Squad number18Player nameAmartey
Squad number6Player nameEvans
Squad number4Player nameSöyüncü
Squad number11Player nameAlbrighton
Squad number42Player nameSoumaré
Squad number25Player nameNdidi
Squad number27Player nameCastagne
Squad number37Player nameLookman
Squad number9Player nameVardy
Squad number7Player nameBarnes
Squad number10Player nameMaddison
Squad number14Player nameIheanacho
Squad number22Player nameDewsbury-Hall
Chelsea
Squad number16Player nameMendy
Squad number14Player nameChalobah
Squad number6Player nameThiago Silva
Squad number2Player nameRüdiger
Squad number24Player nameJames
Squad number7Player nameKanté
Squad number5Player nameJorginho
Squad number21Player nameChilwell
Squad number19Player nameMount
Squad number20Player nameHudson-Odoi
Squad number29Player nameHavertz
Squad number10Player namePulisic
Squad number12Player nameLoftus-Cheek
Squad number22Player nameZiyech
Line-ups
Leicester
Formation 3-4-3
- 1SchmeichelBooked at 45mins
- 18AmarteyBooked at 40mins
- 6EvansBooked at 45mins
- 4Söyüncü
- 11Albrighton
- 42SoumaréSubstituted forDewsbury-Hallat 75'minutes
- 25Ndidi
- 27Castagne
- 37LookmanSubstituted forIheanachoat 45'minutes
- 9Vardy
- 7BarnesSubstituted forMaddisonat 45'minutes
Substitutes
- 5Bertrand
- 10Maddison
- 12Ward
- 14Iheanacho
- 17Pérez
- 20Choudhury
- 22Dewsbury-Hall
- 23Vestergaard
- 29Daka
Chelsea
Formation 3-4-2-1
- 16MendyBooked at 65mins
- 14Chalobah
- 6Thiago Silva
- 2Rüdiger
- 24James
- 7Kanté
- 5JorginhoSubstituted forLoftus-Cheekat 77'minutes
- 21Chilwell
- 19MountSubstituted forZiyechat 63'minutes
- 20Hudson-Odoi
- 29HavertzSubstituted forPulisicat 62'minutes
Substitutes
- 1Arrizabalaga
- 3Alonso
- 4Christensen
- 10Pulisic
- 11Werner
- 12Loftus-Cheek
- 18Barkley
- 22Ziyech
- 28Azpilicueta
Referee:Paul Tierney
Attendance:35,497
Live Text
Match ends, Leicester City 0, Chelsea 3.
Second Half ends, Leicester City 0, Chelsea 3.
Offside, Leicester City. Daniel Amartey tries a through ball, but Kelechi Iheanacho is caught offside.
Attempt missed. Ben Chilwell (Chelsea) left footed shot from outside the box is high and wide to the right. Assisted by Christian Pulisic.
Offside, Chelsea. Hakim Ziyech tries a through ball, but Callum Hudson-Odoi is caught offside.
Offside, Chelsea. Antonio Rüdiger tries a through ball, but Ben Chilwell is caught offside.
Hakim Ziyech (Chelsea) wins a free kick in the defensive half.
Foul by Çaglar Söyüncü (Leicester City).
Corner, Leicester City. Conceded by Thiago Silva.
Corner, Leicester City. Conceded by Édouard Mendy.
Attempt saved. James Maddison (Leicester City) left footed shot from outside the box is saved in the top right corner. Assisted by Kiernan Dewsbury-Hall.
Offside, Chelsea. Antonio Rüdiger tries a through ball, but Ben Chilwell is caught offside.
Substitution, Chelsea. Ruben Loftus-Cheek replaces Jorginho because of an injury.
Substitution, Leicester City. Kiernan Dewsbury-Hall replaces Boubakary Soumaré.
Offside, Chelsea. Hakim Ziyech tries a through ball, but Christian Pulisic is caught offside.
Attempt missed. Hakim Ziyech (Chelsea) left footed shot from the centre of the box misses to the left. Assisted by Reece James.
Goal! Leicester City 0, Chelsea 3. Christian Pulisic (Chelsea) right footed shot from very close range to the bottom right corner. Assisted by Hakim Ziyech.
Christian Pulisic (Chelsea) wins a free kick in the defensive half.
Foul by Wilfred Ndidi (Leicester City).
Foul by Hakim Ziyech (Chelsea).
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