Here's my votes based on my April trip:
Primo Piatto at Riviera for a quick breakfast - Cinnamon crumble french toast pudding
Kona Cafe at Poly for a table breakfast - Tonga Toast and macadamia nut pancakes
Boma at Animal Kingdom for a buffet breakfast - ham, scrambled eggs with spinach, sticky buns, french toast bread pudding.
Steakhouse 71 Lounge at Contemporary for apps or light bites: loaded mac n cheese & pbj wings (yum)
Beaches & Cream at Beach Club for burgers and ice cream
Banana Cabana at Caribbean Beach for light lunch (Edit to add: grilled shrimp salad and bread pudding)