A little astray
... but we had a 1/2 grown female Verrucosus tunnel, yes "tunnel", as in 3" down, 3" over, and 3" up, into a cage of juvenile panther chameleons less than four weeks old, and she ate every one (about 6). She wasn't tunneling to lay eggs, and just popped up in a new cage, as it doesn't usually work like that here. Go figure. Only ever happened once, but it did happen. Found the tunnel to prove it, and the cage was not adjacent, as in "next to" on the same row, but behind it, as in a whole different row, and a 30' walk away, precluding that she was just put back in the wrong cage.
At another time, put a hatchling panther in front of an adult male panther, to see if he had an inkling to consume it. We would not have allowed such, but wanted to see if that was his response. The adult male bobbed his head instead, as if to want to mate. Chester the molester ? Maybe. But also a new way to sex hatchling females ... LOL ... it did happen, but it is not how we sex juveniles.
To the OP. Hard to believe you are serious, and not just punking this forum. As made jest of by others, did your chameleon "look lonely"? Complain ?
There is a word for assigning human emotions to that of an animal. I forget it right now, but it is a reaction that needs to be set aside. This forum, and other sites, offer great research opportunities. There are times when chameleons can actually be kept together, other than for mating, and contrary to how Mother Nature does things. Its also for when you have more experience. Good luck with all.