you need live plants (i know you knew it already.. But, I am always an advocate of using real plants for chameleons to be happy. So, I am saying it again

lol)
Also, are you using night light?
If so, no need for it. Since, it is in your bed room, I doubt you yourself gonna let the room temp drop below 50F.
If you can, try get a digital probe thermometer -with hygrometer built in- (Lowes and wal mart has them).
Those zoomed analog thermometer and hygrometer are really bad and inaccurate as well.
The water heater concerns me the most.
I might be mistaken; but, is it safe using plastic tupperware with an aquarium heater inside?
Seems like a fire hazard waiting to happen.