Hey there!
A few things here:
The blue bulb can be removed. See night lights here:
https://www.chameleonforums.com/care/lighting/
Green at night is fine. Consider them his PJs. Chams don't have the same control of their pigment as they do when they are awake, so they can be pretty stunning.
Do you notice any mucus? Do you notice anything around his nostrils? When he opens his mouth, does it look like he has some mucus like film?
Plus LOD? Confused by what this means. Been away for a while so new acronym. You need a vitamin supplement as well. Not daily mind you, but you need it.
What is his fecal stuff like? There is the normal brown part and then a white, chalky part called urate. Could you see if you can find any and take a picture? I understand you said you haven't seen any, but I would recommend hunting for some. Not seeing any for two days could be worrisome.
Is the soil exposed on either of the plants? I normally use large river rocks to cover the tops so that chams don't get any if for some reason a cricket finds their way there.
Never once used a dripper, so can't comment there.