Preheat your oven to 400°F (200°C).

Cube the chicken breasts into 1-inch pieces, dice the onion, and mince the garlic. Shred the mozzarella cheese.

Warm 1.5 tablespoons of olive oil in a large skillet. Sauté diced onion for 2-3 minutes until softened, then add minced garlic and cook for 30 seconds.

Add spinach and cook until wilted (3-4 minutes). Season with salt, black pepper, and red pepper flakes.

Increase heat to medium-high, add cubed chicken, and cook until golden brown (5-7 minutes).

Place flatbreads on a baking sheet, lightly spray with water, and par-bake for 3 minutes.

Spread sautéed spinach mixture on flatbreads, layer with cooked chicken, and top with mozzarella and parmesan.

Return flatbreads to oven and bake for 5-6 minutes until cheese is melted and bubbly.

Let cool for 1-2 minutes and garnish with chopped parsley before serving.