Yup, they can, but yours is a long way off. Looks just nice and healthy to me, could maybe even gain a little more.

In the pics I've seen of obese geckos, I noticed it most around the hind legs -- SUPER fat and chunky.
As for the question of impaction from mealies, it can happen, but it's usually not a problem. It's the exoskeleton or chiten that's a little harder to digest; most will just poop it out lol. I think the concern people have is mainly for smaller and younger geckos, i.e. hatchlings or very young juvies. However, we've been feeding mealies to all our leo hatchlings upon their first shed, and we haven't seen a problem yet.
Pretty l'il fella there Beth!
