Prepare your ingredients by chopping the garlic and gathering everything on the counter.

In a bowl, drizzle olive oil over the chicken breasts and sprinkle taco seasoning; massage it into the meat.

Heat a skillet over medium heat and cook the chicken for 6-7 minutes per side until golden brown and fully cooked (internal temperature should reach 165°F).

Let the chicken rest for a few minutes before shredding it with two forks.

Warm tortillas in another skillet or microwave until pliable.

Assemble tacos by filling each tortilla with shredded chicken and topping with diced tomatoes, cheese, sour cream, and cilantro.