Are you sure it's not a BROWN Anole????

Maybe the tag on the cage was wrong and he was a Brown Anole, who I beleave can be green sometimes.

AND, maybe he sees his refelction in the glass and it scares him, give him some time to get used to it, maybe put up some paper. (read this while I was doing research about Green Anole)

If he is stressed it's no wonder he hasn't eaten.

Ash