Margarita Grilled Chicken is a dish from the chain restaurant Chili's – it's basically a marinated grilled chicken breast loaded with Tex Mex toppings. At the restaurant, it's served with Mexican-style rice and refried beans.   My version of this recipe is technically not grilled chicken. It's made much easier in the oven, which is perfect for those of you that don't have regular access to a BBQ. However, you can indeed grill it on the BBQ if you'd like – you should only need 15 minutes on the grill.