Oh well, the thing was, and the reason I asked, was because I found a supplier of very small super worms, small enough for my beardie (or at the latest, in a few weeks will be), and I just wanted to make sure it wasn't because of chitin-caused impaction.
I feed him Superworms as a staple, and crickets when they are small still, but large enough (I'm trying to breed crickets right now), and they also seem to never die xD