Metabolic Bone Disease is when the bones weakens up and can lead to misgrowth or broken bones. Its most commonly caused by wrong supplementing and/or lack of UVB light
All reptiles are cold. They are cold blooded creatures and not like mammals. Thats why we provide them heat sources, because they cant produce their own body heat
It he bites he is really trying hard to make you notice that he doesnt want to. Biting is usually last resort.
But yes if he is outside and you have to move him back inside it cant really be helped as it must be done
Veilds are known for being able to eat both greens and insects but I doubt he'll turn into a vegetarian haha ;) My guess he is just tired of crickets. Have you considering offer him a bigger variety of feeders? Chameleons can be quite picky and like humans they want variation of their food
Thanks for the info, I didn't know that. I've always read the opposite and use substrate so couldnt really witness it :) But yeah there is a high risk of bacteria in such places
Hand feeding is the best method to build a trusting bond between you and your chameleon. I would look for opportunities like I do with my own who isnt afraid of showing that he wants to get out ("climbing" walls, walks to the door etc.", then he is most likely to climb onto me but I doubt your...