01 - Pat the chicken breasts completely dry using paper towels to ensure proper seasoning adhesion and crust formation.
02 - Combine smoked paprika, garlic powder, onion powder, dried thyme, dried oregano, cayenne pepper, black pepper, and kosher salt in a small bowl. Mix thoroughly to distribute spices evenly.
03 - Brush each chicken breast with olive oil or melted butter on both sides, then press the spice mixture generously onto the surface, ensuring complete coverage.
04 - Preheat a large cast-iron skillet over medium-high heat until thoroughly hot, approximately 3 minutes. A properly heated pan is crucial for achieving the signature blackened crust.
05 - Place seasoned chicken breasts in the hot skillet. Do not move or disturb for 4-5 minutes to allow a dark, crispy crust to form. Flip carefully and cook an additional 4-5 minutes until internal temperature reaches 165°F.
06 - Transfer chicken to a cutting board and let rest for 3 minutes to allow juices to redistribute. Serve immediately with fresh lemon wedges.