blew away Swansea 5-0 at the Liberty Stadium with four sensational goals in the opening 45 minutes as the league leader extended their lead over Manchester City at the top of the Premier League to five points.
A second half strike by substitute Andre Schurrle completed the rout after a brace of goals from Oscar and Diego Costa ripped the heart out of the home side.
It took, the Blues just 50 seconds to open the scoring. From a Swansea throw-in, the ball was misplaced by Gylfi Sigurdsson. Oscar collected it, took two forward touches before unleashing a venomous right-footed drive from 25-yards, that arrrowed low and wide of hapless goalkeeper Lukasz Fabianski.
That strike stunned the home fans. But 60 seconds later Iceland midfielder Sigurdsson almost redeemed himself when he left fly with a 25-yarder of his own.
Luckily for Petr Cech, who was well beaten by the shot, the ball crashed against the apex of his crossbar and right post.
Oscar and then Willian both went close with shots, the first parried out by Fabianski, the follow-up, skied over the crossbar.
Fabianski was soon in action again, on 19 minutes, when he dived low to his left to thwart an edge of the box drive by Hazard.
But the Blues would not be denied, and a minute later the league leaders were 2-0 as Diego Costa slotted home cooly from 10 yards out to notch his 16th league goal of the season after excellent set-up play, by Cesc Fabregas, Willian and Oscar.
Willian was next up to test Swansea' porous defence on 29 minutes, but his shot rattled the left hand upright.
Swansea committed the footballing equivalent of suicide on 33 minutes when Federico Fernandez placed a weak back pass to Fabianski. So weak that Costa had the easiest of chances to latch onto it and slot it under the goalkeeper's body to make it 3-0.
Worse was to come two minutes later, if that was possible, when another quick break saw Costa set up Oscar to ram the ball high into the net from the edge of the penalty area.
A minute later and a sensational pass by Fabregas let in Costa who should have scored on a one on one with Fabianski, but instead he cut back to pass to Willian who rattled the crossbar for the second time.
An early spat in the second between Costa and the aggressor Ashley Williams could not deflect Chelsea off their victorious path. Referee John Moss decided that a quiet word was all that was required.
Jose Mourinho's excellent time management saw out the remainder of the half.
Costa and Fabregas were replaced with 16 minutes left, Ramires and Loic Remy the able replacements.
Andre Schurrle entered the fray for Willian a minute later. Oscar saw a lovely curler inch wide of goal on 77 minutes.
But it took the German just five minutes to notch up number five with a simple tap home from close range from a simple Ivanovic byline pass.
Next up for Chelsea is the first leg of the Capital One cup at Liverpool on Tuesday.
Teams: Chelsea, Cech, Ivanovic, Terry, Luis, Fabregas, Oscar, Hazard, Costa, Matic, Willian, Cahill
Subs, Courtois, Zouma, Mikel, Ramires, Schurrle, Salah, Remy.
Swansea City, Fabianski, Taylor, Williams, Dyer, Carroll, Routledge, Oliveira Gomis, Tiendalli, Gylfi Sigurdsson, Fernandez
Subs, Tremmel, Amat, Emnes, Rangel, Bartley, Fulton, Barrow
Referee J Moss