01 - Combine chili powder, cumin, smoked paprika, garlic powder, onion powder, oregano, cayenne pepper, salt, and black pepper in a small bowl. Mix thoroughly and set aside.
02 - Heat a large skillet over medium-high heat. Add ground beef, breaking apart with a wooden spoon. Cook for 5-6 minutes until fully browned. Drain excess fat if desired.
03 - Sprinkle the prepared seasoning mix evenly over the browned beef. Stir continuously to coat all meat with spices.
04 - Pour in water and add tomato paste. Reduce heat to medium and simmer for 4-5 minutes, stirring frequently until the mixture thickens and flavors meld. Adjust seasoning to taste.
05 - Heat tortillas in a dry skillet for 30 seconds per side, microwave for 20 seconds, or hold over an open flame until warm and pliable.
06 - Spoon seasoned beef into warm tortillas. Add desired toppings including lettuce, tomatoes, cheese, onion, cilantro, avocado, sour cream, and salsa.
07 - Arrange tacos on a serving platter and serve immediately while hot.