I'm not sure if this is the cause but i'm pretty sure that you should only be using a D3 based calcium 1-2 a month and using a calcium without D3 every-every other feed
Have you changed anything in his cage lately? Or maybe handling him more often? Can he see any other animals, dogs, cats, other chams?
Other then that stuff just make sure his basking temp is no hotter then 85 until he gets older
Nothing has changed in his cage. Always been the same setup. We have a pitbull but he doesnt get close to the cage