Ok so kinda what I was seeing in his images... He is developing Metabolic bone disease. He has the wrong type of UVB lighting.
The enclosure as well has to be upgraded. It is too small and the venting for it being on the top is going to create stagnant air because it does not vent from the bottom up. Cage set up should be adjusted as well. All the bark on the bottom is an impaction risk. The fake plants as well are not advised because veileds eat their plants.
So correct info would be... Read through this husbandry program
https://chameleonacademy.com/chameleon-husbandry-program-getting-started-with-chameleons/
Then for veiled specific husbandry
https://chameleonacademy.com/veiled-chameleon-care/
Ask all questions here once you read through everything. You will see quickly by reading all the info where you need to make corrections.
IF your panther is in the same type of set up then same risks will apply for MBD and impaction. Veiled and Panther husbandry are very similar.
https://chameleonacademy.com/panther-chameleon-care/