01 - In a medium bowl, whisk together the olive oil, lemon juice, minced garlic, dried oregano, paprika, salt, black pepper, and chili flakes until well combined.
02 - Place the chicken breasts in a large resealable plastic bag or shallow dish. Pour the marinade over the chicken, ensuring each piece is evenly coated on all sides.
03 - Seal the bag or cover the dish and refrigerate for at least 30 minutes, or up to 4 hours for a more pronounced flavor.
04 - Preheat your grill to medium-high heat (approximately 375°F to 400°F). Lightly oil the grates to prevent the chicken from sticking.
05 - Remove the chicken from the marinade, allowing any excess to drip off. Discard the remaining marinade. Place the chicken on the grill and cook for 6 to 8 minutes per side, until the internal temperature reaches 165°F and the juices run clear.
06 - Transfer the grilled chicken to a plate and tent loosely with aluminum foil. Allow the chicken to rest for 5 minutes so the juices redistribute evenly throughout the meat.
07 - Sprinkle the chopped fresh parsley over the rested chicken and serve alongside lemon wedges.