Add the flour, protein powder, baking powder, cinnamon, baking soda, and salt to a medium bowl and stir until well combined. Set aside.
In a separate bowl, whisk together the milk, eggs, oil, maple syrup, and vanilla extract.
Add the dry ingredients to the wet ingredients, and fold until almost combined. Set aside.
Shred your zucchini, then measure out 1 cup. Squeeze the 1 cup of zucchini to remove excess moisture using several layers of paper towels. Add it to the batter and stir until just combined.
Heat your pancake maker or large skillet over medium heat and add oil to coat. Once preheated, add ¼ cup of the batter to the pan or to each pancake well. Cook for 2-3 minutes, then flip the pancake and continue to cook for another 1-2 minutes or until done through the middle.
Repeat step 4 with remaining batter (you should have 14 pancakes), then serve with your favorite pancake toppings!