Preheat the oven to 350F. Line 2 baking sheets with parchment paper.
In a bowl, combine the flour, potato chips, pecans, and salt. Using a stand mixer with a paddle or a hand mixer, beat the butter, sugar, and brown sugar on the medium-high setting until pale and fluffy. Add the egg and vanilla and beat until combined.
Reduce the speed to low and slowly add the flour mixture. Beat until well combined, but do not overmix.
Roll the dough into 1-inch balls and place onto the parchment-lined sheets about 2-3 inches apart. Using the bottom of a dry measuring cup coated in flour, press the cookie balls into 1/4-inch thickness.
Bake the cookies, 1 sheet at a time, for about 10-13 minutes, rotating the sheet halfway through baking. The bottoms should be lightly browned and the cookies should be just about set. Allow them to cool completely on the sheet.
Microwave the chocolate for 30-45 seconds until completely melted, stirring a few times in between. Carefully dip the cooled cookies into the chocolate until it is half covered in chocolate, allowing excess chocolate to drip back into the bowl. Place onto a baking sheet lined with parchment paper (you can use the same one you used to bake them on if you want).
Sprinkle sea salt onto the warm chocolate, then refrigerate until the chocolate is set and hardened, about 15 minutes.