Not to be gross but I'm not suprised. Some snakes just prefer lizards like anoles. I am suprised the snake is going after a cham that big that it can't even get its mouth around.
I was happy when the first one fell to avoid the snake. It was great technique on the chameleons part.
The second video gave me a bit of anxiety between the battle and intense music. I'm happy with the ending. I would have been sad if it turned out differently since that chameleon was such a beauty.