Dice the fully cooked chicken nuggets bite-size pieces. Toss with half of the BBQ sauce to coat.
Preheat the oven to 400°F. Place the flatbread on a baking sheet. Lightly brush with olive oil.
Top with BBQ chicken pieces and add the cheese to cover the area of the flatbread.
Bake for 10-12 minutes, or until the cheese is melted and bubbly, and the flatbread edges are golden.
Remove from the oven and top with a drizzle of ranch and garnish with thinly sliced green onion. Slice and serve.
Notes
Use a little olive oil to brush on top of the flatbread crust so that it gets extra crispy as it bakes.I would suggest using shredded (pre-shredded or freshly shredded) mozzarella cheese, not fresh mozzarella. There is too much moisture in the fresh mozzarella and will turn out slightly soggy.Drizzle a little extra barbecue sauce on top of the flatbread before baking so that there's more sweet and savory flavor throughout.For even crispier texture, par-bake the crust before adding the toppings, maybe 3-4 minutes to give it just a little extra crunch.