Brown the 1 lb ground beef in a large skillet over medium-high heat for 6 to 8 minutes, breaking it up as it cooks, until no pink remains. Drain excess fat if needed.

Reduce heat to medium. Add the 1 tbsp chili powder, 1 tsp cumin, 1 tsp garlic powder, 1 tsp onion powder, 1/2 tsp paprika, 1/2 tsp salt, 1/4 tsp black pepper, 1/4 tsp oregano, and 1/4 tsp cayenne. Stir for 1 minute until the spices coat the beef.

Pour in the 3 tbsp water and simmer for 3 to 4 minutes, stirring occasionally, until absorbed and the beef looks glossy.

Spoon into taco shells and serve immediately with your preferred toppings.