As food you can use all kinds of commercially available insects (like house crickets, grass hoppers, cockroaches, flies and so on). Excessive feeding with flour worms can lead to adiposis. For grown up animals there should be a fasting day once a week. Pregnant females may get a baby mouse (max. 48 hours of age) as well. Furthermore chameleons like pieces of vegetables food like tomatoes, kiwis and grapes.

When feeding your chameleons you supply them with important vitamins and calcium. Therefore you have to dredge the food with powder and put it into the terrarium.

Generally one can say that normally fed animals are healthier and more vital than overfed ones. They also have an increased life expectancy. Too much food harms your chameleon!! 

The drinking water supply should result from spraying the terrarium twice a day. Chameleons lick the water from the plants. At the same time periodical spraying keeps the humidity at 70%.Giving grown animals additional water with a pipette is recommended at least once a week. As an alternative chameleons can drink from a pipette daily. Some animals also drink out of a bowl (but that is an exception).