Cook your bacon through, then cut them into 1 or 2 inch pieces.
Preheat the oven to 400 F. Place the crust or flatbread on a sheet pan. Sprinkle the mozzarella over the crust, then add the Italian seasoning.
Place the tomato slices around the pizza, then add on the chopped bacon and red onion slices. Top with a sprinkle of parmesan.
In a small bowl, toss the arugula with the olive oil, balsamic vinegar and a pinch of salt and pepper. Set aside.
Pop into the oven for 6-8 minutes until reached your desired crispiness. Remove from the oven and add the arugula on top. Let rest for 3-4 minutes, then slice and serve!