In a small bowl, whisk together the olive oil, lemon juice, minced garlic, chopped rosemary, thyme, and parsley.
Place the chicken breasts in a large resealable plastic bag or a shallow dish.
Pour the herb marinade over the chicken, making sure each piece is well-coated.
Seal the bag or cover the dish and refrigerate for at least 30 minutes, or up to 4 hours for maximum flavor.
Preheat your grill to medium-high heat, or preheat your oven to 375°F (190°C) if you prefer to bake.
Remove the chicken from the marinade and discard the marinade.
Grill the chicken for 6-8 minutes per side, or until the chicken reaches an internal temperature of 165°F (74°C). If baking, place the chicken on a lined baking sheet and bake for 25-30 minutes.
Let the chicken rest for a few minutes before slicing and serving.
Enjoy hot with your favorite side dishes! Perfect with a simple salad or some roasted veggies.