Place the chicken breasts between two sheets of parchment paper and pound chicken to an even thickness. Place chicken in either a zip close bag or glass bowl and add the Avocado Oil, Tastefully Simple® Fiesta Seasoning, salt, garlic powder and lime juice. Stir to coat and let marinade for at least 10 minutes, up to 24 hours.
Heat a grill pan over medium-high heat and brush pan with Avocado Oil to prevent chicken from sticking. Grill on both sides, 3 to 5 minutes, or until chicken is cooked through. Let rest for 5 minutes under foil before slicing.
For Mango Salsa:
Combine the ingredients for the salsa in a mixing bowl and stir to combine.
Serve the salsa on top of the grilled chicken in the warmed up tortillas. Top with cotija cheese and enjoy!
Feel free to substitute the grilled chicken with white fish, shrimp or steak!