Caseys Corner in Magic Kingdom and an Honorable mention of the Sleepy Hollow Stand/QS.
Flame tree BBQ in Animal Kingdom and maybe Yak and Yeti in Asia if your into that stuff.
Hollywood studios Back Lot Xpress to get the Chicken and Waffles.
EPCOT I would say the American Pavillion, the food around World Showcase is somewhat at time adventurous. Electric umbrella is the worst place on WDW property