I have a young female Veiled Chameleon named Perle. I also have two beautiful and well-behaved cats, Sabrina (F) and Cosmo (M).
They both love Perle and only show interest in her cage when I buy crickets, or when I have her out to change the cage up. Other than that they really don't pay her any mind. Cosmo likes to try to sniff her, but if she hisses he will back off. Sabrina is an avid bugger and she will eat the crickets if they get out. I don't know why I bother to buy her cat food
I have the cham cage out in the dining room and they never ever have tried to get on top or inside. When they are bad kitties I spray them with water.
I would never throw them outside just because they are curious about something. I want them to see other animals and to be good with them. That is just how I feel. I do agree with keeping an over curious pet away from any lizard cage.
The only thing that I worry about with Perle is over curious guests that want to stick their hands in the cage and try to touch her. I would electrocute them lol.
To sum it up. Keep and eye on the cat or cats that you have. If they act up spray them with water or make a place that they can get up higher than the cham cage. Please dont shock them, or kick them, or otherwise just for being cats.