Originating in Argentina, chimichurri is a classic sauce that pairs wonderfully with grilled food, especially meats. Used both as a marinade and as a side dish, this sauce made with parsley, garlic, and vinegar is ideal for enhancing the flavor of chicken breasts. Its perfect balance of freshness, acidity, and spicy notes instantly wins us over, making it a perfect addition to any barbecue. Chimichurri sauce is naturally gluten-free, making it an excellent option for simple and delicious cooking. Discover all the secrets to a successful, 100% gluten-free chimichurri chicken below.