In a medium mixing bowl, whisk together the creamy tahini and maple syrup until well combined and smooth.
Add the protein powder, oat flour, and sea salt to the bowl.
Stir with a spatula until a thick, cohesive dough forms. If the mixture is too crumbly, add water one teaspoon at a time until it holds together.
Gently fold in the mini dark chocolate chips until evenly distributed throughout the dough.
Scoop approximately one tablespoon of the mixture at a time and roll between your palms to form a uniform ball.
Place the finished protein balls on a parchment-lined plate or tray.
Refrigerate for at least 30 minutes to allow the balls to firm up before serving.