The Ivorian scored his third goal for the season in Thursday's win over Molde in Europa League.
Arteta has used Pepe sparingly in the Premier League, and when asked what would change his mind, the Spaniard replied: "Consistency throughout the game, throughout 90 minutes in every ball, in every action and every time he is on the ball in the final third to make a difference and do it more and more and more," Arteta said in his post-match press conference.
"The final product has to be better, not just from him, if we want to become a top, top team and score many more goals it's something we have to put higher demands on at the moment.
"Today he scored a really good goal, another assist and he can do more. But I think he is on the right path."