Yes, some chams appetite is affected by the time they shed! So it can be the issue.
While they are babies shedding takes few hours, a day at the most!
So what do you feed him?
Good news, he's been eating more since my last update. I ran out of crickets and the pet store didn't have any either, so I got him some mealworms instead (I know, not the best, but it was all they had). Here's a couple of new pictures of him.