The Gunners were tasked with matching rivals fourth-placed Manchester United on Saturday after the match The Red Devils beat Tottenham at Old Traffordand was rarely threatened by a Leicester team that has stuttered all season.
Party’s header close to the post from a Gabriel Martinelli corner just 11 minutes put the Gunners in control.
And while Harvey Barnes twice tested goalkeeper Aaron Ramsdale, it came as no surprise as Arsenal doubled theirs from the penalty spot in the second half.
Lacazette moved up to convert after referee Anthony Taylor looked, looked and looked again at the VAR monitor for a Caglar Soyuncu handball that prevented Partey from heading into an open goal. The official eventually pointed to the spot and Lacazette committed.
Arsenal player ratings
Aaron Ramsdale – 8
Made himself big to reject Barnes in the first half and also tipped a header from the playmaker over the crossbar
Cedric – 6
Had a difficult afternoon against Barnes, but Saka threw in to cover the flank. A stable, though not dazzling, performance.
Ben White – 7
Rarely stretched and communicated well with Gabriel to handle Leicester’s front line. Has always had the opportunity to distribute sideways or up to Partey. A routine view.
Gabriel – 8
A strong performance from the center-back required to get the most out of the race between him and White. Rarely restless.
Kieran Tierney – 7
A typically solid performance from an attacking left-back who brings stability to a team that can curl up under pressure at times.
Thomas Partey – 8
Got the early goal with a header close to the post from Martinelli’s corner and controlled the midfield along with Xhaka. Hit the post with a long line of effort and would have scored a second if Soyuncus’ arm was not in the way.
Granit Xhaka – 6
Was lucky to avoid being warned to catch a ball that was about to go out of play before it had crossed the line. This kind of insanity confuses Arsenal fans, but he was otherwise solid enough in midfield.
Bukayo Saka – 7
Not quite his eerie best on a day when Leicester sat deep, but tested Schmeichel and did his press work diligently
Martin Odegaard – 9
Controlled Arsenal’s advancing momentum and was there to sneak into the gaps between Foxe’s midfielders.
Gabriel Martinelli – 7
Was always ready to find a teammate and pick the Leicester lock, even though it was Odegaard who made the most of the intricate play when he camped around the Foxes box.
Alexandre Lacazette – 7
Was comfortable again playing the central striker role and fell deep when needed to get the Arsenal engine running.