Sprinkle each chicken breast with 1 tbsp chili powder, cumin, red pepper flakes, and a pinch of salt.
Grill around the fire for 7-10 min each side depending on the thickness of each breast.
Just before the chicken is fully cooked, squeeze 1/4 of a lime on each breast.
After the chicken is fully cooked, squeeze a little spicy ranch on to one side of the chicken and top with shredded cheese. Allow the cheese to melt before removing the chicken from the grill.
Optional - top with fresh diced tomatoes