Registered dietitians share the affordable Dollar General groceries they actually recommend, from protein-packed pantry staples to fiber-rich foods that support balanced meals.Medically reviewed by Jane Leverich, M.S., RDNCredit: Getty Images. EatingWell design.Key PointsRegistered dietitians recommend several affordable Dollar General staples. Budget-friendly pantry foods like beans, oats, canned seafood, nuts and high-fiber wraps can make heal…