In the bowl of a stand mixer, cream together butter and sugars. Mix in egg and vanilla, followed by salt, baking powder, baking soda and flour. Mix until no streaks remain and all ingredients have been incorporated well. Stir in by hand with a spatula the potato chips and chocolate chips. Cover and chill for 1-2 hours.

Preheat oven to 180°C (160°C fan-forced). On a lined baking sheet, using an ice-cream scoop, space cookies 5cm apart. Bake for 10-12 minutes or until edges are lightly golden. Allow cookies to rest on tray for 5 minute prior to transferring to a wire rack to cool completely. Store in an airtight container.