Late to the party, sorry (I either haven’t been receiving notifications when I get tagged or they come in a while after I’ve been tagged)! So his feeding amount should be 3 feeders 3 times a week (like Mon, Wed, Fri like you’ve been doing). Are you using mealworms as a staple or for variety/treats? Is your fogger a cool-mist or warm-mist fogger? Since you do have a homemade cage, you'll want to get a Solarmeter 6.5 to make sure the UVI levels in his cage are appropriate! For measuring basking temps, you'll need a digital thermometer with a probe, with the probe placed where the top of your cham's back is when he's on his basking branch. It should be 80-85*F there (preferably 80-82*F though). How long is each hand misting, and at what times of day are they? Is your hygrometer digital or analog, and where is it placed? What are your nighttime temps and humidity levels? You don't need to feed your veiled any plants, as they are insectivores. If they do eat plants, it'll be from the cage plants (which is why all plants in a veiled enclosure need to be veiled-tested), not from feeding them. Like others have said, your cage does need some work, and his supplement schedule should be calcium without D3 every feeding, except for one day every two weeks, when you'll use the Reptivite With D3.
Here's some helpful links!