Meat lovers! If adding protein, cook in large non-stick pan before vegetables in Step 3. Transfer to a plate, then add to flatbreads in Step 5 or serve on the side. If using chicken, pat dry and season both sides with ¼ tsp. salt and a pinch of pepper. Stir occasionally with 2 tsp. olive oil over medium-high heat until chicken reaches minimum internal temperature, 5-7 minutes. Cut into 1" pieces if added to flatbread. If using Italian sausage, remove from casing. Cook with 1 tsp. olive oil over medium-high heat. Break into small pieces with a spoon until no pink remains, 4-6 minutes. If using ground turkey, combine with 1/4 tsp. salt and a pinch of pepper. Cook over medium-high heat with 1 tsp. olive oil. Break into small pieces with a spoon until no pink remains, 7-9 minutes.