Grilled chicken with barbecue sauce is a classic dish that is perfect for a summer barbecue or a quick and easy weeknight dinner. The chicken is marinated in a mixture of olive oil, garlic, and herbs, which gives it a flavorful and tender texture. Once the chicken is grilled, it is brushed with a thick and smoky barbecue sauce, which is made with ketchup, brown sugar, Worcestershire sauce, and spices.