Place first 8 ingredients in a large zip lock back and combine thoroughly. Add the chicken breasts and mix until the breasts are evenly coated. Place in the refrigerator to marinate for 2-4 hours.
Peel and chop the mango. Rinse and drain the black beans. Chop the green onions, jalapeno and cilantro. In a small bowl, combine the lime juice and cumin until well mixed. Place the mango, black beans, green onions, cilantro, and jalapeno in a large bowl. Pour the lime/cumin mixture over and mix gently. Taste - add more lime juice if needed.
Grill chicken breasts until thoroughly cooked. Let the meat rest for at least 5 minutes before slicing into thin slices. Place the corn tortillas in a panini grill for 30 seconds (or cook them in a dry skillet on each side for 45-60 seconds). Layer the warmed tortilla with sour cream, sliced chicken, cotija cheese, mango and black bean salsa. Serve with a side of guacamole and salsa. Enjoy.