01 - Combine smoked paprika, garlic powder, onion powder, dried oregano, dried thyme, cayenne pepper, black pepper, and kosher salt in a small bowl. Mix thoroughly to ensure even distribution.
02 - Pat the chicken thighs completely dry with paper towels to remove excess moisture, which helps the spice mixture adhere properly and promotes better grill marks.
03 - Place chicken in a large bowl. Drizzle with olive oil and lemon juice, then sprinkle with the Cajun spice mixture. Toss until each piece is evenly coated. Cover and refrigerate for at least 30 minutes, up to 4 hours for deeper flavor penetration.
04 - Heat grill to medium-high temperature, approximately 400°F. Clean grates and lightly oil if needed to prevent sticking.
05 - Place marinated thighs on the preheated grill. Cook for 6 to 8 minutes per side, developing a nice char and ensuring the meat reaches an internal temperature of 165°F.
06 - Remove chicken from heat and let rest for 5 minutes. This allows juices to redistribute throughout the meat, ensuring each bite remains tender and moist.