He is changing his style, trying to play the ball, trying long pass, trying to be how he isn't and never will be. He doesn't understand how is silly when he runs in the box after a simple pass, when tries to dribble the opponents with dribblings and one-two passes, when he tries to score a goals running in the space or with long shots.
He is a BRM.
Like I said in the past, if Coquelin remains Coquelin, is very useful for Arsenal (he should follow the steps of a midfielder like Kante which hasn't changed his style). The penalty conceded yesterday it's only a new episode of a season full of mistakes and bad decisions.