In a bowl, mix lemon juice, olive oil, garlic, salt, and pepper to create a marinade.

Add the chicken breasts, coating them well. Cover and refrigerate for at least 20 minutes.

Preheat your grill to medium heat. Grill the chicken for about 5-7 minutes on each side until it's thoroughly cooked.

Top it off with some parsley and pair it with a fresh salad or roasted vegetables.