Preheat oven to 350℉. Line two baking sheets with parchment paper.
Whisk together the gluten-free flour, baking soda, and salt together in a medium bowl.
Add the egg and mix until combined. The mixture should look like thick caramel sauce. Stop the mixer and add the gluten-free flour mixture. Mix on medium speed until a thick dough forms. Add the chocolate chips and stir until incorporated.
Drop dough, about two tablespoons each, onto prepared cookie sheet. (A cookie scoop makes this easy.) Space cookies about 2 inches apart.
Store cookies in an airtight container for up to five days or freeze cooled cookies for up to three months.