01 - In a mixing bowl, combine olive oil, lemon juice, minced garlic, dried oregano, smoked paprika, salt, and black pepper. Whisk until thoroughly blended.
02 - Place chicken breasts in a large resealable bag or shallow dish. Pour marinade over the chicken, ensuring each breast is well coated. Seal or cover and refrigerate for a minimum of 30 minutes and up to 4 hours for enhanced flavor.
03 - Preheat grill or grill pan to medium-high heat. Lightly oil the grates to prevent sticking.
04 - Remove chicken from marinade, allowing excess to drip off. Grill each breast for 6 to 7 minutes per side, or until the internal temperature reaches 165°F (74°C).
05 - Transfer grilled chicken to a plate and let rest for 5 minutes. Slice and serve garnished with fresh chopped parsley and lemon wedges, if desired.