In a stand mixer fitted with the paddle attachment, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 2–3 minutes.
In a separate bowl, whisk together the flour, baking soda, cornstarch, and salt. Slowly add the dry ingredients to the wet, mixing just until combined.
Add a few more potato chips on top for finishing, and a sprinkle of flaky sea salt. Let cookies cool for a few minutes on the cookie sheet, then transfer to a wire rack. ENJOY!!