show pics of the setup. it may be a stress related issue. if the cag is to small for the individual they often times want to come out to get away from their cubical.
I have had 3 chameleons and they have all been like that. The females often want to be out more when they are receptive. Amy can be a real pain trying to get out all the time when she gets like that! Yet the rest of the time she is quite happy just to sit and watch the world go by. Tommy also 'begs' me to let him out when he wants some attention.I feel priveleged to have had 3 wonderfully 'people friendly' chameleons.