Thank you so much!! I’m not even good at just holding her yet….I’ve only done it one time! So this should be fun!! LOL!!You'll have to get her angry. What my vet does when she needs to look inside my guy's mouth is run her fingers along the side of his mouth from back to front. If doing that a few times doesn't do it, she covers his nostrils and he opens right up.
While I've not had to medicate our chameleon, I am giving our bearded dragon meds for parasites and the same technique works for him.
Also, be prepared to get bit. Our chameleon got me the last time he was at the vet and she looked in his mouth and the beardie gets me every couple of days when I give him his meds (really hoping this round knocks them out so I can stop getting bit).