Step 1

Zest the lime into a bowl with the cilantro, garlic, olive oil, lime juice, and salt. Mix well to create the marinade for the chicken.

Step 2

Spoon the marinade over the chicken in a gallon plastic bag, ensuring it's evenly coated on both sides, and move it to the refrigerator to marinate for 30 minutes to 2 hours.

Step 3

Once the chicken is done marinating, remove the chicken from the bag and pat as dry as possible, removing any pieces of garlic and large pieces of cilantro. Discard the remaining marinade.

Step 4

Sprinkle Tajin seasoning generously on both sides of the chicken breasts.

Step 5

For gas grill Preheat the grill to high heat. Cook the chicken breasts for 2 to 3 minutes per side, covered, or until the internal temperature has reached 165 degrees Fahrenheit.For charcoal grill Heat the grill to medium heat. Place the chicken on the hot side of the grate and cook for 3 to 4 minutes on each side.For grill pan Heat the grill pan over high heat. Cook the chicken breasts for 2 to 4 minutes per side, or until the internal temperature has reached 165 degrees F.

Step 6

Let the chicken breast rest for 10 minutes.

Step 7

Slice and serve.