An unappetizing name for a restaurant

"Potbelly" seems to be a chain restaurant in Virgina. They serve ridiculously large sandwiches.

Doesn't the name of the restaurant put off their clientiele? Why would they draw a straight line between their enormous sandwiches and potbellies?

When Pepsi first came to India, some overpaid taste consultant told them that Indians liked sweet things. So, the initial Pepsi formula was a little too sweet. The reigning Cola manufacturer hit back with an image of a bottle of Pepsi swarmed with a bunch of flies. For a long time, Pepsi in Indian minds was associated with something so sweet that it was fly-infested.

So, what's the idea behind Potbelly? Why would a restaurant chain actively try to induce feelings of revulsion? Is there some thing else going on?