I've had my tegu for a few years now and she's never tried to bite me. Recently she's become more aggressive. It seems to happen at random. The first time I was laying down next to her and she bit me on the face. Not aggressively, it was a very small bite and only cause a cut the size of a shaving cut. Just now though she started aggressively trying to bite me. Jumping at my hands with her mouth open. My hands were empty and I don't hand feed her. It's not reactionary either, so it's not like I'm annoying her and she responds. It seems more like her tongue starts flicking in and out and she decides I smell tasty. After trying for my hands she started "hunting" my toes.

Any idea where this behavior would come from and how to curb it?