1. Preheat your oven to 400 F (200 C). If using pre-cooked chicken, shred or dice it into bite-sized pieces. In a medium bowl, combine the shredded chicken with the buffalo sauce, tossing until the chicken is evenly coated.

2. Place your pre-made flatbread or pizza crust on a baking sheet. You can line the baking sheet with parchment paper for easier cleanup.

3. Evenly spread the buffalo-coated chicken mixture over the flatbread, leaving a small border around the edges for the crust.

4. Sprinkle the shredded mozzarella cheese generously over the chicken. If using, crumble the blue cheese over the mozzarella.

5. Transfer the baking sheet to the preheated oven and bake for 10-15 minutes, or until the cheese is fully melted and bubbly, and the edges of the flatbread are golden brown and slightly crispy.

6. Carefully remove the flatbread from the oven. Drizzle the ranch or blue cheese dressing over the hot flatbread in a zigzag pattern.

7. Garnish with chopped fresh chives or green onions. Let the flatbread cool for just a minute or two before slicing it into wedges or squares. Serve hot and enjoy!