To a large bowl, add the almond butter, protein powder, 1/3 cup coconut flour, honey, vanilla extract, cinnamon, and 2 tablespoons almond milk. Stir until the mixture forms a dough that is soft enough to roll into balls, but not overly sticky. Add additional coconut flour or almond milk as needed to get the right consistency. Stir in the chocolate chips.
Roll into 12 balls. Enjoy immediately or store in the refrigerator for later.
*Coconut flour is the most high protein and low carb option for these protein balls. It is also grain free. If you prefer not to purchase coconut flour, you can use oat flour. To make your own oat flour, pulse oats in a food processor until smooth, then measure and use in the recipe as directed. (I do not recommend wheat flour, as its taste will be off-putting and unlike coconut flour and oat flour which are heat treated as a part of processing, it is not safe to eat wheat flour without cooking it further first.)