01 - Preheat your grill to medium-high heat, approximately 400°F. Allow the grates to get hot for optimal searing.
02 - In a small mixing bowl, combine the olive oil, ground cumin, garlic powder, smoked paprika, salt, and black pepper. Stir until a smooth paste forms.
03 - Rub the spice mixture evenly over both sides of each chicken breast, ensuring full coverage for consistent flavor throughout.
04 - Place the seasoned chicken breasts on the preheated grill. Cook for 5 to 6 minutes per side until fully cooked through and juices run clear. The internal temperature should reach 165°F when checked with a meat thermometer.
05 - During the final 2 minutes of grilling, spoon 2 to 3 tablespoons of salsa verde onto each chicken breast, then lay a slice of Pepper Jack cheese on top. Close the grill lid and allow the cheese to melt completely.
06 - Transfer the chicken off the grill using tongs and let it rest for 5 minutes so the juices redistribute before serving.
07 - Scatter chopped cilantro and diced red onion over the chicken. Serve alongside lime wedges for squeezing fresh juice over each portion.