Mmm do you think it is a large quanitity? I had a female that would eat pothos leaves but she didn't seem to be affected by it but she also didn't eat it very frequently.
Cover the soil with rocks like mentioned before and you could rinse off the leaves to ensure that the leaves do not have any chemicals on them because your chameleon will be drinking off the leaves. What kind of plants are they?
I wouldnt say im an expert but it sounds good to me, is it possible to post some pictures of the enclosure? Also it is important to have a lot of horizontal climbing branches in you enclosure along with branches of varying diameter to exercise their feet.
It was probably the saline solution, but has he acted oddly besides the the throwing up or has he thrown up more than once? He should not be drinking the saline solution because he will become dehydrated.
Your enclosure is looking alright but it could use a little more foliage and horizontal branches. Most people here dislike using any type of substrate to avoid inadvertent impaction. I use paper towel and change it regularly. One other thing that I'm sure you know, is that you will have to...
I haven't seen a meal worm turn into a beetle since elementary school but my wax worms often turn into moths so I kinda understand. Its mind blowing how they turn into something quite different in the matter of weeks.