Chameleon net eating, HELP!

[Regina.]

Cham info:
-Veiled chameleon, about a year old, male, I have him for a month
-I handle him daily, he runs to and on my hand when I reach in the terrarium
-I feed him mealworms, black beetle larvae and locusts
-I use ExoTerra multivitamin and calcium+D3
-I mist the cage several times daily, as much as it's needed to keep the humidity at around 65%
-He barely poops anything, it's brown and more runny then it should be, his urine starting to become brownish, he hasn't been checked for parasites
-While with the previous owner, he was said to be healthy and eating enough

Cage:
-Nom(o...?)y pet UVB lightning with one bulb for heat
-I can only measure the temp. on the top of the cage, which is usually around 30C, he gets light from 7am to 7pm
-I measure the humidity with a hygrometer
-No live plants
-The top of the cage is at around 160cm, and it's in the living room, so he can see someone moving from time to time
-I live in Hungary

Problem:
Since I got him he is not eating enough, even though I give him the food that the previous owner gave. I've been told that he ate crickets, but when I gave him he did not eat any of it, so I switched to locusts. He ate the ones I gave him first, but then he stopped with that too. I'm sure he has appetite, because when I give him waxworms(one per day) he is eating those. He only eats a few mealworm/day and because that I can see that he lost weight already. At first I thought that this is only because of the change in the environment, but now I'm really starting to worry.
I bought him with the terrarium, so it should be fine, as he lived in it for several moths without a problem.
I was also told that the owner gave him water from a syringe, but I can not make him drink from it. The only way he was once drinking was that I spayed little amounts of water on his face after misting, and I tried to do that the following day, but again nothing.

 

[NickTide]

Have you tried veggies as well? Mine ate a lot of romaine lettuce. Or he may just be bored. He likes worms so try silk and horn worms. You can get silk eggs pretty cheap but may need some live worms until the eggs are ready.

 

[Regina.]

He is only interested in stuff that is moving, so I don't think he'd like veggies, but I'll try. Sadly silkworms are really expensive here and I can't find any place where I could buy eggs. Hornworms are'n for sale here. I tried to buy soldier fly larvae, but almost all of them arrived dead :/

 

[Graves923]

I just want to address a few things with your current setup.

Try not to feed mealworms. They are hard to digest and could cause impaction.

Misting is not only to keep humidity up but to provide hydration for the chameleon. Mist for atleast 5 mins after his lights first come on in the morning and then several more times throughout the day of atleast two minutes or longer. This will stimulate the chameleon to start drinking.

Look into getting a screen cage like a repti-breeze. Chameleon do best with good airflow. stagnant air can cause respiratory infections. Your current enclosure look way too small. He is most likely trying to get out because he feels confined and is also at the age where he will want to roam looking for a potential mate. The minimum cage size for an adult veiled is 24 inch by 24 inch by 48 inches tall.

For supplements, you state you are using a multi-vitamin and calcium with D3. You will also need a Calcium powder without D3. Dust plain calcium every feeding and dust the multi and D3 every other week alternating with each one. Dusting with just a D3 powder can cause health issues since the D3 can build up in their system.

Now, onto the issue at hand. Runny feces could possibly be from parasites. I would recommend having a vet test it for parasites just to eliminate that as a possible cause. The brownish urates could be a sign or dehydration but if he isn't pooping regularly then that could cause the urates to be discolored.

All in all, I would make a vet appointment to atleast rule out parasites. Hopefully someone else here has other suggestions.

Here are some article to read up on if you haven't already: https://www.chameleonforums.com/care/