Hi i know im jumping in a bit late but here is my take on the situation.
"Watering - I mist the cage every morning with warm water from the tap. I live in milwaukee in the dorms, idk if the water is good/bad for him. I also mist throughout the day 5-10 time until all the leaves are soaked. I also have a little dripper thing from Zoomed set up also. I haven't seen him drink at all, but when I had him before he was always really shy about it so idk."
I'm surprised no one else has mentioned this (unless i missed it amongst the severe fixation on lighting) if the water you are using is public water it is likely chlorinated. you DO NOT want to use that water (its poison). that in it self could partially explain his distaste for being sprayed. but in all likelyhood hes just afraid of the spray.
start using bottled or spring water.
i believe you can also dechlorinate the tapwater by just letting it sit for a day or two. so cheaper than buying cases or gallons of water you should be able to fill up a 5 gallon bucket and let it sit for a few days. but there are chemicals and additives in most public water, so your safest bet is to start getting gallons of spring.
ive never had to dechlorinate because we run off of well water so maybe one of the other forum goers can elaborate on what processes are best for dechlorination.
as far as getting him more accustomed to being sprayed goes, start off soft and indirectly, or even have a dripper going beforehand so hes already in the mood to drink.
if youre using a spray bottle i would highly recommend getting a pressure sparyer. you can get them at most hardware stores, or garden centers. even a few specialty petstores will carry them. all you do is pump it up to pressurize then hold the trigger. this will give your fingers a break if your spraying him like 20 times a day. and "psssssssssssssssssssssss" wont be as scary as a "psht phst PSHT" misting action
though ive had a couple chameleons that never got over their fear of water. seems like it depends on the personality.
now that ive covered water on to HUMIDITY!
get a plant, or two. youll be amazed at how well they help maintain humidity in your enclosure. make sure you clean em off to avoid exposure to pesticides. literally, a little dish detergent sprayed on the leaves then let it sit in a shower to rinse off.
id recommend a ficus at that age, or schefflera. and run a couple vines horizontally. tie them to the screen with thin wire or twist ties.
youll run into the white stuff on the nose if youre over supplement or if hes a bit dehydrated. it could also be due to the heat from the basking lamp. as he exhales through his nose his breath dries.
the huge debate youre seeing about uvb can be solved easily. keep the 10.0s and get live plants for coverage. in fact with the D3 supplement itself is sufficient, its just not how they naturally obtain this nutrient. and the lighting, i feel, is better for their psychological well being and dont over do the D3 supplement a little goes a long way. you dont need you crickets running around looking like powdered doughnuts. be careful with the multivitamin as well. personally i perfer gutloading over dusting multivitamins. that way you avoid hypervitaminosis (causes kidney damage and such)
the 100w bulb is risky, even if the basking temp is a-okay they can still climb the screen right up to underneath the light. so lower wattage and closer spot is preferential
i think i covered everything i wanted to mention.
so to sum that up,
make sure you use dechlorinated water
get a couple of live plants it will raise your humidity level (and you cham will love you for it)
your lighting should be just fine, esspecially if you can provide him with plenty of shade.
dont over supplement on the D3 that may be why hes got dusty nose
