That enclosure looks super tiny...
For a 5 month veiled i'd recommend a 18"x18"x36" enclosure. You can even put him in a big boy cage but I'd only recommend that if you're comfortable making sure he's cup feeding.
For one your enclosure looks glass, which can get bacteria easily since theres not allot of ventilation. (Looks glass from the pics, so sorry if it's mesh

assuming it's glass because you have the 2 reptile hammocks to help your cham climb)
Also the feeder bowl, should be a cup in a corner. Your cham may love to poop in the bowl, then your feeders will eat the poop. The poop will become a gutload which is BAD.
As for foliage, add some live plants such as a golden pothos plant. Also it doesn't look like you have a drainage system for your mistings. I'd suggest looking around the forums for ideas.
As for feeders, i'd suggest crickets and dubia roaches for now. Throw in a couple silkworms / hornworms here and there. Mealworms are hard to digest since their exoskeleton is so hard. I use to feed my cham them only if they came out of a molt so they're softer. Also be sure to check out sandras blog for a great gutload source:
https://www.chameleonforums.com/blo...sphorus-ratios-common-good-gutload-foods.html
Oh...And welcome to the forums

Didn't realize you're a new member.
Can you explain to me your lighting set up aswell? and do you know the sex of your cham? If not, take a picture of the back feet. Males have a little nub and females don't.
Thanks!