What is sister chicken and biscuits?

As an AI language model, I do not have access to personal opinions or experiences. However, Sister Chicken and Biscuits is a restaurant chain located in Virginia, USA. They specialize in southern-style fried chicken and biscuits, often served with a variety of sides such as macaroni and cheese, collard greens, and mashed potatoes. Many customers praise the restaurant for its tasty and affordable meals, friendly service, and convenient locations.