You can take a medium or large cage and make levels or section it off so he won't get tired of running up and down the enclosure. Place the food up top.
I am currently housing an Elliot's Chameleon. So far, so good. I've had him since 8/7/19. He will only grow to be between 10 to 12 in. At this point he's only 6 in.
Colors: Dark brown, Bright green
Food: Live crickets, wax worms so far.
Water: Dripper / Mister bottle (Once every 4 to 5 hrs)...