I'm sure Arsenal will win in this match, Chelsea is a bad team and can't compete against top teams.
Chelsea previous matches: they beat Brighton which currently in bad performance too, Fulham and Burnley (two mediocre teams).
Arsenal previous matches: they beat Manchester City aka toughest team, unlucky lose against Lens (but Chelsea is worse than Lens).
So it's obvious Arsenal will win, the odds is high too, don't miss to bet Arsenal to win @2.15.
You are correct. No matter how well or poorly Chelsea performs this time around, they cannot compete with Arsenal. I am aware that some people may believe Chelsea can compete with Arsenal because Lens defeated them in the Champions League, but this is the Premier League, and even Chelsea fans will find it difficult to predict their team's victory over Arsenal. As a result, even if they won against Burnley or Fulham. Arsenal will be my preferred club to win, and I believe they will have nothing to worry about, despite my thinking that they may take advantage the benefit of playing at home to win against Arsenal, but they always deliver poor results.
Since Arsenal was able to defeated Manchester City, I have no reason to doubt that Chelsea will defeat or draw with them. If Chelsea loses, I don't think the club will regain its previous form for the remainder of the season; it will be challenging for them to grow stronger than this.