The lights seem like that would be too bright also. I am not an expert. I have only had my baby veiled chameleon for 3 1/2 months, so I am still learning. I am sure they will tell you to fill out a sheet with all the husbandry info on it too after you tend to you baby.
Not sure if a luke water bath will help him for about 10 minutes then. Also you can put some bottled water and mix it with baby food 1:1 ratio and fee with a syringe if he has not been eating.
Since the vet is closed now, I would recommend putting him in the bathroom. Turning on the shower full blast with just hot water to heat the bathroom and make it humid with the door shut. His eyes look dark which is a sign of dehydration. I would try to get him to drink drops of water ASAP from...
Sometimes I have to drip water from a syringe on Vinny's nose for a couple of minutes, about 5 seconds in between drops; for a few minutes before he realizes he is thirsty. Or take him in the bathroom with the sound of water running and do that. Also if too humid/steamy bathroom when I try to...