MK - Columbia Harbor House, Pecos Bill’s, Casey’s or Sleepy Hollow (which is more of a snack stand but has fun items like baked potatoes, hand dipped corn dogs and waffle sandwiches)
EP - anywhere in the World Showcase (especially the fish & chips in UK and Les Halles in France), Sunshine Seasons
HS - the only decent options are ABC Commissary and Backlot Express. Depending on when you’re going, possibly the new Toy Story QS is it’s open, though we of course don’t know the quality there yet.