Preheat oven to 400 F. Place a large baking sheet into the oven as it warms up.
Meanwhile, heat the teaspoon of oil in a medium nonstick skillet over medium heat. Add in the sausage and crumble with a wooden spoon. Cook until browned and cooked through then add in the garlic and bell pepper and sauté until fragrant and softened slightly, about 1-2 more minutes.
Once the oven is at temperature, place the Flatout flatbreads onto the pre-heated baking sheet and top with the pizza sauce, leaving a small 1/2 inch border around the edges. Add the sausage and bell pepper mixture, the roasted red peppers, the hot peppers, and the mozzarella cheese. Bake until the cheese is melted and the edges are crispy, about 5-7 minutes.
Meanwhile, mix the arugula in a bowl with the oil, lemon and a pinch each of salt and pepper.
Once the pizza is ready, top with the arugula mixture and a grating of parmigiano reggiano, to taste. Cut using kitchen scissors and enjoy!