All the taste - 1/2 the calories of regular potato chips. Fat free made with olestra. Lay's brand Light Original Potato Chips deliver the irresistible great taste and satisfaction you expect from Lay's brand but with no fat and half the calories of regular potato chips! How do we do it? We make Lay's brand Light Potato Chips with Olean brand fat free cooking oil (also known as olestra). Product Comparison: Lay's Brand Light Potato Chips (per 1 oz serving): 0 g fat; 75 calories; 100% taste. Regular Potato Chips (per 1 oz serving): 10 g fat; 150 calories; 100% taste. Calorie content has been reduced from 150 to 75 calories per serving.