01 - Whisk olive oil, lemon zest and juice, orange zest and juice, minced garlic, rosemary, thyme, parsley, salt, and pepper in a bowl.
02 - Place chicken breasts in a resealable bag or shallow dish. Pour marinade over chicken, coating evenly. Refrigerate for at least 30 minutes or up to 4 hours.
03 - Set oven temperature to 400°F (200°C).
04 - Heat an oven-safe skillet over medium-high heat. Remove chicken from marinade, shaking off excess, reserving marinade. Sear chicken 2 to 3 minutes per side until golden brown.
05 - Add reserved marinade to the skillet, place citrus slices if desired, then transfer skillet to oven. Roast for 15 to 20 minutes until internal temperature reaches 165°F (74°C).
06 - Remove from oven and let chicken rest for 5 minutes. Garnish with extra herbs and citrus slices if preferred. Serve warm.