Bill Clark’s job only gets harder. As executive director of Philabundance , the Philadelphia area’s largest nonprofit hunger relief organization, he has this to say about today’s food crisis: “The hunger that used to exist in inner cities or rural areas like Appalachia has leapt beyond those pockets into the middle and working classes. I don’t think there is a zip code in the country today that is totally devoid of hunger.” Clark, appropriately enough, has never been far from the food business. Shortly after getting his undergraduate degree from Wharton, he became a product manager at a company that made soups and breakfast meats. In 1982, he started a Chicago-based producer and marketer of specialty foods, everything from soups and pastas to salad dressings and natural licorice. He sold the business in 1995 and spent the next six years consulting and working for the W. Atlee Burpee Co. In 2001, he was offered the job of executive director of Philabundance.…