01 - Set your grill to medium-high heat, targeting approximately 400°F. Allow grates to fully preheat for optimal searing.
02 - In a small mixing bowl, combine the olive oil, ground cumin, garlic powder, smoked paprika, kosher salt, and black pepper. Stir until a smooth paste forms.
03 - Coat each chicken breast evenly on both sides with the spice marinade, pressing gently to adhere the seasoning.
04 - Place chicken onto the hot grill and cook for 5 to 6 minutes per side until fully cooked through and juices run clear. Confirm an internal temperature of 165°F with a meat thermometer.
05 - During the final 2 minutes of grilling, spoon 2 to 3 tablespoons of salsa verde over each breast and lay a slice of Pepper Jack cheese on top. Close the grill lid and allow the cheese to melt completely.
06 - Transfer chicken off the grill and let it rest for 5 minutes so the juices redistribute before slicing.
07 - Scatter chopped cilantro and diced red onion over each piece and serve alongside fresh lime wedges.