The best shrimp item I've had at a quick service is the Shrimp Wrecked Salad at the Snack Shack in Typhoon lagoon.
Shrimp Wrecked Salad - mixed greens with shrimp, fresh strawberries, feta and a combination of dried blueberries, cherries, and cranberries tossed in a raspberry vinaigrette dressing, topped with toasted pecans $9.49