Light the grill.
Place the chicken breasts on a cutting board and make a slice on the right side of the breast from the top to the bottom to form a butterfly. Do not slice all the way through.
In a medium a skillet on medium-high heat, warm the olive oil. Add onions and peppers and sauté. Add the banana peppers or jalapeños and sauté. Drain the sautéed veggies on a paper towel and set aside.
Open the butterflied chicken breasts and place 2 slices of Cooper Cheese in the center of each. Equally portion the sautéed veggies on top of the cheese. Fold over the top of the butterflied chicken breasts to close.
In a medium bowl (big enough to coat the chicken breasts) prepare the spice rub by combining paprika, cumin, salt, pepper and garlic. Mix well.
Gently coat each stuffed chicken breast on both sides with the spice rub. Be careful to keep the contents inside the stuffed chicken breasts as you coat them.
Place each stuffed chicken breast on the grill and cook 6 minutes on each side (cover grill to enclose heat). Chicken should cook until it is no longer pink in the middle and reaches an internal temperature of 165°F.
Remove from the grill, serve and enjoy!