In addition, he is very rigid in the way he thinks. His fixation with food and cigarettes could be from his mother not giving him the attention he needed when he was an infant. She could have given him food when he was crying or upset. That may be why he goes to it now when he is stressed out or nervous.
Hank is in the oral stage and he indulges in food and cigarettes when he is angry or upset. The argumentative behavior that Hank exhibits comes from low self-esteem.