Combine meat, garlic, chili powder, salt, and pepper in a large skillet; cook over medium heat until meat is browned, stirring to crumble.
Combine lettuce, tomatoes, and onion in a large mixing bowl; set aside.
Fry tortillas in deep hot oil (375°) until crisp, folding in middle to form taco shell. Drain on paper towels.
Fill each taco shell with 2 tablespoons meat mixture; top with lettuce mixture and cheese. Serve with hot sauce.