In a small dish, combine the chili powder, garlic powder, onion powder, oregano, paprika, cumin, salt and pepper and stir together until well mixed.
Place the uncooked steak strips into a Ziploc bag and add the spice mixture from step one. Seal the bag and shake/turn until the steak is coated with the seasoning.
Pour the oil into a large skillet and bring to medium heat. Add the seasoned steak strips and stir to coat the steak with the oil. Cook, stirring and flipping occasionally, for about 5 minutes until the steak strips are cooked to taste. Remove from heat.
Warm your tortillas slightly in the microwave to make them more pliable and lay them out to fill. Divide the lettuce and the steak between the 8 tortillas and top each one with a tablespoon of the guacamole. Top each taco with a sprinkling of sprouts and a few slices of tomato and radish.