hello there and sorry to hear your little one is not eating. There are several things that need changing. First you need a plain calcium to dust with. One that contains NO d3. The repcal you are using contains a very high concentration of d3 and you do not want to use that but a couple of times a month.You could be overdosing your little one on d3. The multi should be used 2 or three times a month also. Your basking temp should be around 90.You did not mention your basking.. ambient in the mid to low 70's ideally. Humidity does not need to stay at 80% That is a bit high constantly. I would shoot for around 50-60% and then when you mist, it should rise and fall. I would also read up on gutloading on Sandrachameleons page. You need to add more variety to your gutload.