Preheat oven to 375°F (190°C).
Whisk the eggs with milk, salt, and pepper until smooth.
Lightly scramble the eggs in a pan until just set, not fully cooked.
Place flatbreads on a baking sheet and top with scrambled eggs.
Scatter mozzarella, tomatoes, olives, bell peppers, and sausage over the eggs.
Bake for 10-12 minutes, until the cheese is melted and bubbly.
Sprinkle with fresh parsley before serving warm.