Papa John's founder is at it again. This time he is investing in a four-unit sandwich chain. The Calistoga chain, founded in 2004 by Mark Bates, has three upscale sandwich shops in Florida and one in Lexington, Kentucky.

Papa John's founder, John Schnatter, seems to think that careful growth and luck is the key to its success.

"I'm not counting on another Papa John's," Schnatter told The Courier-Journal of Louisville in a recent interview. "In business you can be pretty good, but you still have to have a little luck."

Schnatter founded the Papa John's pizza chain in 1984 in a converted broom closet.

"What most people forget is that it took nine years to get to 100 Papa John's," said Schnatter. His company is now the third-largest U.S. pizza chain. "We're going to be very methodical, one at a time."

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