01 - Whisk together olive oil, soy sauce, honey, lemon juice, garlic, smoked paprika, cumin, oregano, red pepper flakes if using, salt, and black pepper in a large bowl until fully incorporated.
02 - Submerge chicken thighs in the marinade, turning to coat all pieces evenly. Refrigerate covered for a minimum of 2 hours, ideally overnight for optimal flavor penetration.
03 - Heat grill, oven, or skillet to medium-high temperature (approximately 375°F to 400°F).
04 - Lift chicken from marinade, allowing liquid to drain off. Discard the used marinade completely.
05 - Place chicken skin-side down and cook for 6 to 7 minutes per side until internal temperature reaches 165°F and skin develops a crisp, caramelized exterior.
06 - Transfer chicken to a platter and let rest for 5 minutes to redistribute juices before serving.