In the United States, we tend to think that the whole world shares our lifelong love of all things dealing with pizza.

It’s just not the case, though. There are actually parts of this globe where a “large, extra-cheese, half-pepperoni” order would be greeted by the emptiest of stares.

But for Papa John’s Chief Executive Nigel Travis, spreading the gospel of pizza is one of his clearest everyday expectations.

Travis, speaking at the second day of the Reuters Food Summit, said that Papa John’s has invested heavily in its international expansion and has its eye on many key markets as it fights for market share with other, larger players, Domino’s and Pizza Hut.

Still, Travis is an optimist, and has an aggressive and organized plan for the company to make its mark in many new markets. He recognizes, however, that one size doesn’t fit all and many of his plans for growth revolves around making a concept that works for that region.

Click below and listen to his thoughts on growth — the right kind, and the kind where you can get yourself in trouble.

Travis was one of the featured speakers at this year’s Food Summit, which continues through Thursday at our Chicago offices.