good color, full turrets you want to make sure there not sunken in at all , also check gerth of chameleon make sure you seeing it equall proportioned to the cham itself. check for any burn marks or any sign of a fungal infection, also check if its wild caught or captive bred, if its wild caught there a good chance that it can have parasites which will require a vet visit or 2 to clear up. One big thing is pay close attention to the ribs and limb if u can see the ribs hes probably not fed well and with the limbs pay close attention to if there is any curvature of limbs at all can be early signs of mbd. ?I would recomended reading the mbd thread in the health section so you can get a better idea of what mbd looks like