In a medium sized bowl or zip lock bag at 2 tablespoons olive oil, chili powder, paprika, garlic powder, cumin, red pepper flakes, and salt and pepper. Add the flank steak and marinate for at least 30 minutes.

In a medium sized skillet at 1 tablespoon olive oil peppers and onions and sauté for about 5 minutes until veggies are tender. Remove and set aside on a plate.

Turn the skillet to high heat and add the steak. Sear each side for about 2-3 minutes until it gets a golden brown crust and is to desired doneness. Remove the steak and let it rest. Slice in strips across the grain. Serve with veggies and garnish with fresh chopped cilantro and favorite toppings.