I completely agree with
@Lindasjackson. Once the ambient room temperature is the temperature that the basking spot should be, then there is no reason to have the basking light on anymore. The chameleon will only utilize a basking light to achieve certain internal temperatures. Once those temperatures have been achieved, the chameleon will retreat into the foliage like Linda said. Most of the time, they are spotted basking in the early morning and late afternoon when the temps start to drop at night. They don't need a basking light on all the time either, even if the temperature in the room is around 68-72 during the day.
@JacksJill, one of the resident jacksonii breeders here on the forums, sets her basking lights on timers so they don't bask all day. She's getting extremely healthy offspring and well-digested poops.
Keeping the room at 80 degrees is not a good idea because it leaves no room for the chameleon to retreat. We should aim to give our chameleons gradients so they can choose what temperature and humidity they want to be at.
I'm sure I missed a few points but that's the gist of it. Feel free to ask more questions or refute my points. I'm open to a healthy discussion.