In a medium mixing bowl whisk together olive oil, lemon juice, basil, parsley, oregano, rosemary, thyme, and garlic. Season with salt and pepper to taste (I use a scant 1 tsp salt and pepper, not included in nutrition estimate).
Place chicken in a resealable bag. Pour marinade mixture over chicken. Seal bag while pressing out excess air.
Rub marinade over chicken while turning pieces to coat with herbs and garlic until it's evenly distributed.
Transfer to refrigerator and let marinate 1 - 8 hours.
Preheat a gas grill over medium-high heat to about 425 degrees.
Grill chicken until center registers 165 degrees in thickest portion, about 5 minutes per side.
Let rest a few minutes before serving. Garnish with more fresh basil and parsley if desired.