In a medium bowl, whisk together the ground oats, protein powder, cocoa powder, baking powder, and salt.
In a separate small bowl, whisk the egg, almond milk, and vanilla extract until combined.
Pour the wet ingredients into the dry ingredients and stir until just combined; do not overmix.
Heat a non-stick skillet over medium-low heat and lightly coat with non-stick cooking spray.
Pour approximately 1/4 cup of batter onto the skillet for each pancake.
Cook for 2 to 3 minutes until small bubbles form on the surface and the edges look set.
Flip carefully and cook for an additional 1 to 2 minutes until the center is firm.
Transfer to a plate and serve immediately.