01 - Preheat oven to 425°F. Line a baking sheet with parchment paper.
02 - Place the flatbreads on the prepared baking sheet. Spread each flatbread evenly with BBQ sauce, leaving a small border around the edges.
03 - Distribute the shredded chicken evenly over the BBQ sauce on both flatbreads.
04 - Sprinkle mozzarella and cheddar cheeses over the chicken.
05 - Top with sliced red onions and jalapeños, if using.
06 - Bake for 12-15 minutes, or until the cheese is melted and bubbly and the edges are golden.
07 - Remove from oven. Drizzle with extra BBQ sauce and sprinkle with chopped cilantro. Slice and serve hot.