Very normal, especialy if the other snakes are not hognoses.
Basically, hognoses are smaller and do not grow as fast once they reach a certain size, plus they should be in a brumation state about now (maybe not completely but at least partially) and won't really shed much.
Mine shed a TON when they were babies, now that they are older they barely shed. It's normal, nothin to worry about unless it seems like they aren't growing at all. Also, my hognoses (neonates and adults) have no shed since august or october. It's normal and once winter is over that'll change. Don't worry!
How large is the hognose?