Preheat the oven to 350 degrees Fahrenheit.
Whisk together the ground flax seeds with water and set aside.
Whisk together all wet ingredients. Whisk in the flax mixture once it has thickened.
Fold in the dry ingredients aside from the chocolate
Fold in the chocolate chunks or chips. If the dough seems too wet, stick it in the fridge for about 20 minutes until it is easier to handle. It will depend on the type of protein powder you used and how it absorbs ingredients.
Use a 2 tablespoon cookie scoop and scoop and place on a baking sheet lined with parchment paper. Press on a few extra chocolate chunks/chips on top.
Bake for 9-13 minutes. They will continue to harden as they cool.
Remove from the oven and let cool completely before handling. Sprinkle with salt flakes and enjoy.