Whisk together the flour, baking powder, baking soda, and salt. Set aside.
Using an electric mixer on medium speed, beat the butter, peanut butter, and brown sugar until light and fluffy. Mix in the egg and vanilla.
Reduce mixer speed to low. Gradually add the flour mixture, mixing just until combined or a few streaks of flour remain.
Stir in the chocolate chips.
Refrigerate the dough for an hour.
Preheat oven to 375°F (190°C). Line baking sheets with parchment paper or silicone liners.
Stir together the confectioners' sugar, potato chips, and salt in a shallow bowl.
Using a tablespoon of dough at a time (I use a #60 scoop), roll the dough into balls. Roll each ball in the coating mixture, making sure to cover completely in a thick layer.
Place the cookies on the prepared pans, leaving about 2 inches between each cookie.
Bake, one pan at a time, 8 to 10 minutes, or until the cookies are lightly browned. (Refrigerate the remaining dough between batches.)
Cool on the pan for 5 minutes. Then transfer the cookies from the pan to a wire rack to cool completely.
Notes
*I use a heavy pinch of salt, but adjust to your tastes.
To store. After the cookies have cooled completely, place them in an airtight container. Place wax paper between layers of the cookies to keep them looking their best. Store at room temperature up to 3 days.
To freeze. To freeze the baked cookies, place the cookies in single layers between sheets of parchment paper or waxed paper in an airtight, freezer-safe container. They should keep up to 3 months. Thaw overnight in the refrigerator or for an hour or so at room temperature.