Preheat the oven to 375°F.
In a bowl, whisk the mayo, roasted peppers, and garlic. Season with salt and pepper to taste. Spread onto the flatbread.
Layer with arugula, mozzarella, crumbled sausage, and tomato on top.
Bake for 10-12 minutes until the sausage is cooked and no longer pink (if desired, brown the top by placing underneath the broiler on high for the last 1-2 minutes).
Remove the flatbread from the oven and cut into wedges. Drizzle with balsamic glaze.
Serve with chips, carrots and ranch. Garnish with parsley.