01 - In a small mixing bowl, combine the rosemary, thyme, parsley, minced garlic, smoked paprika, sea salt, black pepper, cayenne (if using), olive oil, and lemon zest. Stir thoroughly until a thick, fragrant paste forms.
02 - Pat the chicken breasts dry with paper towels. Rub the herb paste evenly over each breast, coating all sides. Let the seasoned chicken rest at room temperature for at least 10 minutes, or refrigerate for up to 2 hours for deeper flavor penetration.
03 - Preheat an outdoor grill or grill pan to medium-high heat, approximately 400°F. Ensure the grates are clean and lightly oiled to prevent sticking.
04 - Place the chicken breasts on the hot grill and cook for 6 to 8 minutes per side, until the internal temperature registers 165°F on a meat thermometer and the exterior develops a well-charred crust.
05 - Transfer the grilled chicken to a serving platter and cover loosely with aluminum foil. Allow it to rest for 5 minutes so the juices redistribute evenly throughout the meat.
06 - Serve the chicken with lemon wedges alongside and a generous sprinkle of freshly chopped parsley for a bright finishing touch.