What ingredient is used to marinate the grilled BBQ chicken?

The grilled BBQ chicken at Texas Roadhouse is marinated in the signature BBQ sauce, which is a key component that not only infuses the chicken with a distinct flavor but also helps to tenderize the meat as it marinates. The signature BBQ sauce blends various ingredients to create a sweet, tangy, and smoky flavor profile that complements the grilled chicken perfectly. This specific marination process is what sets Texas Roadhouse's BBQ chicken apart, ensuring that every bite is juicy and flavorful. Other types of sauces or marinades, like olive oil or teriyaki sauce, would impart different flavors that don’t align with the restaurant's signature style. Garlic and herbs, while they can enhance flavor, are not the primary ingredients used to marinate this specific dish.