Usually if a chameleon wants out of their enclosure it means they're not happy with it and when they don't want to come out it means they've grown to like it. Is he in glass? That's really bad for him. Chameleons have a delicate repitory system and need screen/mesh cages for optimum are flow a...
I always thought waterfalls were cute but I know they are breeding grounds for bacteria and parasites so make sure to clean it everyday so your guy doesn't get sick or get parasites :)
Horace sounds cool :) he was the Egyptian God with the "all seeing eye" since chameleons have amazing vision and can move their eyes in any directions at different directions sounds like a good name :) also what kind of plants are in there? And is that a waterfall?
But yeah my cham Kaiju loves papaya. I only give it to him once a month due to the sugar content. But he enjoys collard greens and dinosaur kale very much. I clip it to cage so he can munch on it so he doesn't destroy the hibiscus lol