So your supplementation is off. We use supplements to not only give them vitamins they need but to also balance the phosphorus to calcium level of the insects we feed. Most insects have high phosphorus levels. Issue with this is high phosphorus levels make it so they can not absorb needed calcium to have strong bones. You can start to see issues of MBD and very fragile bones. There are other risks to this as well but its a lot of info. So to combat this we use calcium without phosphorus and Without D3 at every feeding on all insects fed. Then two times a month say the 1st and the 15th you will instead use a multivitamin that has D3 and A in it. Again on these feeding all insects are supplemented. You will always lightly dust with your supplements.
Additionally your supplement types matter as they are not all created the same. And not all of them have what you want in them not to mention some have levels that are too high. This becomes particularly important when it comes to a multivitamin.
Chams are not like all other reptiles. They have extremely specific husbandry or they can end up with some pretty major health issues.
Post pics of your supplement containers please.
I highly recommend reading through this husbandry program
https://chameleonacademy.com/chameleon-husbandry-program-getting-started-with-chameleons/
IF you like videos also watching Neptune the Chameleon on Youtube.