Chop onion, tomato, lettuce, and garlic as described. Divide onion into two portions.

Heat olive oil in a pan over medium heat. Sauté garlic and half the onion until softened. Add ground meat and cook until browned. Stir in taco meat seasonings and cook until liquid evaporates.

Prepare tomato salsa by mixing diced tomato, remaining onion, and salsa seasonings in a bowl.

Warm tortillas in a pan over medium heat, flipping until heated through.