Your current setup is woefully inadequate.
Like I said earlier, you MUST read through that site I recommended, and then get cracking at setting up a proper cage.
Your SunGlo bulb IS a basking bulb, but if it is on the side of the cage (which isn't the most ideal arrangement) make sure that your cham can't get too close to it otherwise it will burn itself.
You don't have any UVB bulb! This is critical. Without a UV lamp, your cham won't be able to synthesise vitamin D3, and thus won't be able to draw up calcium into its bones. Without this, the cham will wither and die from Metabolic Bone Disease (MBD) within a few months. You need to get a tube flourescent UV bulb like the Zoomed ReptiSun 5.0 bulb.
Veiled chameleons don't need any sort of substrate (dirt or otherwise) since they live in trees and hardly ever descend to the ground. Do you have live plants in the cage with plenty of foliage for him to hide in?
How are you watering him? Do you give him at least two lengthy (15 minutes)misting sessions per day? Do you have a dripper system set up to provide him with water?
What are you feeding him? Are you gutloading the insects you feed him properly?
If any of these questions are raising other questions in your own head (like 'what is gutloading?', 'what is misting?') then you haven't read up enough about keeping your cham.
Although the members on these forums can provide tons of advice, there is plenty of knowledge you can obtain without waiting for answers on here. Get cracking, your cham needs you...