Prepare the filling:
- Heat the olive oil on a skillet over medium-high heat. Add the ground beef and cook until brown.
- Drain any fat and add the meat back to the skillet
- Add chili powder, cumin, dried oregano, garlic powder, salt, pepper, tomato paste, and water. Stir until combined and continue cooking on medium-low heat until thickened.
- Serve on a warm tortilla. Add lettuce, tomatoes, cheese, and red onions or other desired toppings.
- Enjoy!