01 - In a bowl, whisk together olive oil, lemon juice, minced garlic, dried oregano, smoked paprika, salt, and black pepper until thoroughly combined.
02 - Place chicken breasts in a large resealable plastic bag or shallow dish. Pour marinade over chicken, ensuring all pieces are evenly coated. Refrigerate for at least 30 minutes, up to 4 hours for optimal flavor penetration.
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 for 6-7 minutes per side until fully cooked and internal temperature reaches 165°F.
05 - Transfer grilled chicken to a cutting board and let rest for 5 minutes before slicing to retain juices.
06 - Garnish with chopped fresh parsley and lemon wedges if desired. Serve immediately.