i was just messaged by someone eles concerning the beef question here is what he posts.
i have never heard of it. I do know that some of the larger chameleons in the wild will eat smaller lizards and frogs. So some get meat in their diets. I don't know if the chameleons digestive system can handle the beef compared to frog and lizard meat. I would reccomend against it unless a vet said it's ok. Stick with gut loaded and calcium dusted insects........along with UV lighting..
he has a good suggestion maybe ask your vet when your there.
good luck again!