01 - Set your grill to medium-high heat, targeting approximately 400°F. Allow the 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 - Pat the chicken breasts dry with paper towels. Rub the spice mixture evenly over both sides of each breast, ensuring full coverage. For deeper flavor, refrigerate and marinate up to 24 hours ahead.
04 - Place the seasoned chicken onto the hot grill grates. Cook for 5 to 6 minutes per side, until the internal temperature reaches 165°F and juices run clear when pierced.
05 - During the final 2 minutes of grilling, spoon 2 to 3 tablespoons of salsa verde over each chicken breast. Lay one slice of Pepper Jack cheese on top of each. Close the grill lid and allow the cheese to melt completely.
06 - Transfer the chicken to a platter and let it rest for 5 minutes. Garnish with chopped cilantro, diced red onion, and serve alongside fresh lime wedges.