Heat a skillet over medium-high heat and cook the ground beef until browned, breaking it up into crumbles as it cooks.
Drain any excess grease, return the beef to the skillet, and reduce the heat to low.
Stir in chili powder, cumin, garlic powder, Mexican oregano, and tomato sauce. Mix well.
Let the beef mixture simmer for 5 minutes, stirring occasionally, to allow the flavors to meld together.
Heat a small amount of oil in a medium skillet over medium heat.
Fry each tortilla for about 30 seconds per side until crispy but pliable. Remove from the skillet and fold each tortilla in half to create a taco shape.
Fill each taco shell with 2 tablespoons of the seasoned ground beef.
Add your favorite toppings, such as shredded lettuce, diced tomatoes, cheese, or sour cream.
Serve the tacos immediately while warm. Pair with rice, beans, or chips and salsa for a complete meal!