Snack-food customers claim they want to eat healthier snacks and lose weight, but snacks marketed as nutrition-wise don't sell as well as traditional salty snacks, such as the iconic Lay's brand of potato chips. Al Carey, CEO of Frito-Lay North America, needs to come up with a strategy to connect with the health-minded customer in a shifting market without compromising the products that built the company. Part A of this two-part case maps out an industry in flux.