Hi
the cage looks very bare, in the first photo especially. I suggest adding some REAL live plants, many more branches (of varying diameters)
also, if your lighting is inside the cage such that the chameleon could touch it, you've got a very serious potential problem (hopefully that's just flash glare)
I dont think those big chunks of bark are a good idea.
How are you monitoring heat and humidity? are there air vents on that cage?