Place flatbread on baking sheet; bake 2 minutes. Meanwhile, in a small bowl, combine chicken with 2 - 3 tbsp. hot sauce.
Sprinkle flatbread with mozzarella cheese; top with chicken. Sprinkle with carrot and celery; crumble blue cheese over top and drizzle with more hot sauce (optional). Bake until heated through and cheese is melted, 4 - 5 minutes. Remove from oven; sprinkle with cilantro.
Notes
1 serving = 7 Weight Watchers Smart Points
Recipe by Not Just Sunday Dinner at https://notjustsundaydinner.com/buffalo-chicken-flatbread/