Chameleons are insectivores. In captivity, they eat crickets, silkworms, hornworms, flies, and more. A few species also supplement their diet with fruits and leaves, but it is a very small percentage of the diet. In the wild, a large chameleon would even eat small birds and other lizards.
Remember that chameleons, in general, are not good as a beginner reptile due to their complex needs and susceptibility to stress (especially while handling them) but if you are a seasoned reptile owner and are ready to take that next step the large veiled chameleon might be for you.
What do chameleons eat?
Feed your chameleon crickets, or waxworms daily. ...
Dust insects with a calcium supplement twice a week.
Veiled Chameleons should also get appropriate greens, such as collards or mustard greens, once daily. ...
Chameleons do not drink from a dish.
What are the Largest Chameleons?
Oustalet's Chameleon (Furcifer oustaleti)
Meller's Chameleon (Chamaeleo melleri)
Parson's Chameleon (Calumma parsonii)
Chameleons have even teeth used from chopping prey to fights between rivals. ...
Chameleons drink dew and rain water, but they can also adsorb water through their skin.
(like some desert iguanas and dragon lizards do).
Source:- https://www.thesprucepets.com
Photographs the main two taken by me in KNP. but the others I Goggled.