In a small mixing bowl, combine the banana, egg, flour, baking powder, spice(s), milk, protein powder, and vanilla until it resembles a slightly clumpy batter. Do not overmix.
½ banana, 1 egg, ¼ cup flour, 1 dash cinnamon or pumpkin spice, 2 tablespoon milk, 1 scoop protein powder, 1 teaspoon vanilla extract