In a large bowl whisk together the protein powder, flour, baking powder & soda, pumpkin pie spice and salt. Set aside.
Separate the egg yolks and egg white. Add the egg yolks to a small bowl and the whites to a large one.
Add the pumpkin purée, milk, maple syrup and vanilla in with the yolks and mix until combined.
Add the egg yolk mixture in with the dry ingredients and gently stir to combine.
Set a skillet to medium heat.
Then using a whisk or an electric mixer, vigorously beat the egg whites until they are foamy and stiff. Add the egg whites to the batter and use a rubber spatula to gently fold in the egg whites. Try to maintain as much of the aeration as possible.
By now your skillet should be ready. Grease it with butter or oil and use a 1/3 cup to measure out each of your pancakes.
Cook each pancake on medium heat for about 2-3 minutes on each side, or until golden. It's easy to want to rush the pancake process but think of it as a s'more, you want it golden and cooked through, so it's worth the wait!
After the pancakes are done, serve warm and with your favorite toppings.