Any advice?

[DannCandynBender]

Any advice?
Our chameleon has normal color normal eating habits but as of yesterday started doing this thing where he just drops his tongue out of his mouth. Full tongue he'll put it back in within a few seconds. We checked for dehydration but his eyes aren't sunken in and he's drinking fine. I can't find anything on the internet in regards to this. He's sitting in here tree currently perfectly fine the tongue thing is happening sporadically but it's very alarming and he does appear to be bulging his lower jaw out some.
Diet:crickets, greens, calcium dust
Habitat: 4ft enclosure organic dirt bottom with fountain

 

[JaguarShark]

That sounds like a possible vitamin/mineral imbalance - a potentially serious one.
If you could fill out this form to give as much info as possible it will help people, but to me it already sounds like a vet visit would be a good idea.
https://www.chameleonforums.com/threads/how-to-ask-for-help.66/