Chameleons need to be able to climb close to their heat lamp when they want to warm up. They need lots and lots of vines and branches and places to climb. They need mesh walls so air can flow in and out. Glass tanks cause nasty respiratory infections in chameleons.
This chameleon has soft bones and the start of Metabolic Bone Disease. He had only a small coil UVB light on top of the tank and its rays did not penetrate far enough to help the Cham absorb the UVB rays. Without the UVB, his body couldn't process and absorb the calcium and his bones grew soft.
As his bones replace the calcium levels and firm up, they will get rather lumpy and thick.
Here's his new set up:
Lots of branches and vines and sticks and ladders. Even a live plant. He can get right up under the new Mercury Vapor bulb to heat up and absorb UVB. He'll do much much better now.