Hi there and welcome. Ok so typically we do not put lights on the sides of the cage. This is why.... He needs a heat gradient going from hottest at the top down to coolest at the bottom of the cage. When you put lights in on the sides then you are creating an ambient heat level that is warmer not cooler. He needs to be able to get down out of the heat. Roots don't need the light just the leaves. Make sure you are running a 12 hour on 12 hours off total darkness cycle with your lighting.
The UVB fixture has to stay directly on the cage. You want the basking spot to be roughly at 8 inches below the screen top. I can not guarantee your UVI level but this will get you close to where he needs to be in a 3-4 UVI range. So if it is showing 85 on the branch you have to account for the temp range going up as his body gets closer to the bulbs. Make sure your getting readings on his casque and watching for gaping. Also make sure he is not sitting on top of those bulbs because you will have thermal burn issues if he is too close.
I can't tell what you have going on for horizontal branches. But the ficus branches are not very large. He may favor one spot in the cage over another simply due to comfort of his grip.
Hope this helps. If you want to fill out the help form we would be happy to check your husbandry. Just copy and paste the form into your thread from this link if you are interested
https://www.chameleonforums.com/threads/how-to-ask-for-help.66/