How many calories in Lay's Oven Baked: Original Potato Crisps 120 Calories Quantity serving, 15 crisps (1 oz) Serving Add To Compare 0/8 Nutrition Facts Calorie Burn Time How long would it take to burn off 120 Calories of Lay's Oven Baked: Original Potato Crisps? Swimming 10 minutes Jogging 14 minutes Cycling 18 minutes Walking 33 minutes Based on a 35 year old female who is 5'7" tall and weighs 144 lbs.