It is very possible, Arsenal is in high confidence after winning the match against Manchester City and also Arsenal's performance is quite impressive this season so it is possible that they can win the match against Chelsea next weekend with a convincing score even though the match is played at Chelsea's home ground.
I think it is quite reasonable that Arsenal are the favorites in this match because the performance/quality of the Chelsea team is far below Arsenal.
I also have no doubts that Arsenal can achieve a convincing victory in this match.
Seriously, Arsenal's play is improving consistently right now. That's how we want them to continue demonstrating fan love, honestly I wasn't aspect that we were going to win Manchester City. All I was worried about was who would play SAKA wing well enough to help Arsenal score against Manchester City when SAKA was hurt, but Jesus performed admirably on that wing. After defeating Manchester City, Arsenal is more confident than before. I am very certain that Arsenal will defeat Chelsea next week.