01 - In a mixing bowl, whisk together olive oil, lemon juice, minced garlic, dried oregano, smoked paprika, salt, and black pepper until fully combined.
02 - Arrange chicken breasts in a large resealable plastic bag or shallow dish. Pour the marinade over the chicken, ensuring all pieces are well coated. Refrigerate for at least 30 minutes, or up to 4 hours for optimal flavor.
03 - Preheat a grill or grill pan to medium-high heat. Lightly oil grill grates to prevent the chicken from sticking.
04 - Remove chicken breasts from marinade, shaking off any excess. Grill each breast for 6 to 7 minutes per side, or until fully cooked and an internal temperature of 165°F is reached.
05 - Transfer chicken to a plate, tent loosely with foil, and let rest for 5 minutes. Slice as desired.
06 - Arrange chicken on serving plates. Garnish with chopped parsley and lemon wedges if desired.