Blues back on top.
Jose Mourinho declared Chelsea's title challenge was over after last weekend's loss at Crystal Palace and, with the Blues' fate out of their own hands, winning the remaining six games was the target.
Liverpool, who play West Ham today, and Manchester City, 4-1 winners over Southampton earlier yesterday, have games in-hand, but Chelsea sit atop the standings with five games to go after Mohamed Salah netted on his full debut.
Frank Lampard followed up to score after Asmir Begovic saved his penalty and Willian curled in a third in the Blues' 15th home win of the season.
It was the response Mourinho - now unbeaten in 77 home Premier League matches - had demanded, although the returning Fernando Torres had few chances of note.
Chelsea had lost three of their last five games - all the defeats away - following up their Selhurst Park loss last weekend with a 3-1 Champions League quarter-final first-leg defeat against Paris St Germain, when Mourinho selected a strikerless starting XI.