I agree with others that you will need a larger cage, a 1 year old Oustalet's must be getting pretty big by now. How about posting a recent picture of your cham? I keep a couple of pairs of Oustalet's and breed them. The youngsters are pretty easy to sex by coloration by 8 weeks of age so I am...
My Oustalet's like hornworms and I have never seen anything like that.
Is your Oustalet's captive bred, wild import or a Florida field collected animal ?
Hard to know what to think from your description of white worms, is it too late to take a photo of them ?
Hope you Oustalet's is...