Big Eater: Hoss has long been established as one, and it is this part of his personality that takes center stage in this episode.
Diet Episode: Joe is determined to make Hoss hungry enough to eat a horse's weight in pancakes the day of the contest, and literally starves him. Much of the comedy in this episode, then, is (of course) Hoss trying to sneak a few side snacks ... but is caught every time.
Eating Contest: Hoss (who else?) is entered in a pancake-eating contest.