A few times when I give my bearded dragon greens or crickets on a tweezer, after he eats it, he shakes his head. He has been doing it with the first food I feed him if I feed him a few things in a row. Normally, he shakes his head when I do something annoying. Or something is on him like water. There is purée on the greens, but nothing on the crickets. He has purée on his face. I’m wondering if he is trying to get that off. Does anyone know what this could mean?