He's a pretty decent size for how little he is (if that makes sense... I mean for his length, he's not too skinny). I'd say he's 3 1/2 - 4 in long, and ways 4-5grams. He's still a little guy.
When he puffs up, he sometimes will crack his mouth open a little bit and let a little "pop" noise out of his mouth, but isn't gaping his mouth wide.
We feed him small crickets, approx, 2 wk. olds, but some grow quickly and he will eat those big ones as well sometimes. He doesn't seem to have any problem eating when he does eat. Just doesn't do it often enough.
Also, today his poop looked a bit runnier than normal. Sorry to be gross, but don't want to leave out any detail that could actually be important.
Thanks again for all your feedback.