Spray skillet with cooking spray and sauté onion and mushrooms for 3-4 minutes or until fragrant. Add spinach and sauté for a few minutes longer, until spinach has wilted. Add egg and egg whites to pan with veggies and cook for about 2 minutes or until eggs are cooked through. While cooking sprinkle on a little sea salt and ground pepper. Warm up the tortilla and the spread on a layer of hummus. Place the egg scramble in the center of the tortilla and top with sun-dried tomatoes and feta. Sprinkle on a little more salt and pepper as well as hot sauce, if using. Wrap tortilla up and serve!