In 10-inch nonstick skillet, cook beef over medium heat, stirring occasionally, until beef is brown; drain. Stir in taco seasoning mix and green chilies. Cook 2 to 3 minutes longer or until beef is thoroughly cooked and seasoning is well combined.
While beef is cooking, heat tortillas and assemble toppings. Divide beef mixture among shells; finish with desired fresh toppings.
Ideas for Make it FRESH toppings: salsa, sliced jalapenos, Sriracha sauce, shredded lettuce, diced avocados, crumbled queso fresco cheese.
