Will Chameleons eat bed bugs

It's likely that the chameleon will eat a bedbug if it spots it moving, as the eyes of the chameleon are attracted to movement. How ever, bedbugs are active during night when the chameleon naturally sleeps. A sleeping chameleon risks dying from stress if attacked.

Also, do consider what is a healthy and nutritious diet for the chameleon. A chameleon's health depend almost solely depends on the calcium/nutrition in food, along with adequate humidity, sun and water. Besides nutrition, bedbugs have not yet proven to infect humanbeings with diseases but they do withdraw blood from a host animal. Any live captured insects risk to carry diseases (gained by diet or by environment) that can be harmful to the chameleon.