
Make the seasoning: In a medium bowl, mix the chili powder, onion powder, cumin, paprika, garlic powder, oregano, red pepper flakes, salt and pepper.
Heat a large skillet over medium-high. Add the meat and cook, breaking it apart with a spoon. Once it’s mostly cooked through, drain any excess liquid.
Stir in the seasoning and ½ cup of water. Continue cooking, stirring occasionally, until the beef absorbs most of the liquid, about 5 minutes.
Warm the taco shells in the microwave for about 15 seconds.
Divide the beef among the shells. Top each taco with cheese, then add shredded lettuce. Finish with hot sauce, a squeeze of lime, and Pico de Gallo.