Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
Lay out the flatbreads on the baking sheet. Brush lightly with olive oil.
Spread pesto evenly over each flatbread, leaving a small border.
Top with cooked chicken, mozzarella, sun-dried tomatoes, and a sprinkle of Parmesan.
Bake for 8–10 minutes, or until the cheese is melty and bubbly and the edges are golden.
Garnish with fresh basil, slice, and enjoy!