First I would start this thread in the health section. There is a form that you could fill out to help us try to figure out what is going on. Here is the link https://www.chameleonforums.com/how-ask-help-66/. Usually the sitting with the mouth open at the top of the enclosure means that the basking, or ambient temperatures are too warm, but with the color of the teeth and the fact that it has only been two days, this seems unlikely. Pictures are a plus as well so we can narrow down the possibilities. Good luck with this problem, and I hope your cham is O.K.