Pre-heat oven to 350 degrees F. Prepare baking sheets with parchment paper. In a large bowl, whisk together flour, salt, baking powder, baking soda.
In a medium bowl, mix sugars and butter till creamy. . Add egg and vanilla and mix till combined.
Mix wet into the dry. Note: it will appear there is not enough liquid for the amount of dry ingredients, but continue mixing.
It will form into a dough, it will just be a firm dough. See tips above for combining. Careful to not overmix.
Gently fold chocolate chips into the dough, without overmixing. Refrigerate dough for at least 20 minutes before using a small sorbet scoop to scoop out dough into small mounds.
Roll each mound into a ball and spread evenly on a baking sheet, leaving roughly 2-3 inches between each ball.
Bake balls for 10-14 minutes, depending on how set you want your centers.
Let your dough balls rest on the baking sheet to cool at least 5-10 minutes.