This helps hold the crepes together, don't skip it or you'll have broken pieces of mess. Tapioca is a starch that derives from the cassave plant and thus it's completely accepted on the whole30 diet.
Use a handheld mixer to beat the eggs, otherwise the collagen powder ends up chunky and that chunkiness will last through the cooking.High protein crepes (any crepes) are super delicate. Use a thin silicone spatula to flip them and be very careful.