In a small bowl, peel one banana and mash it thoroughly with a fork until it reaches a smooth, liquid-like consistency.
In a separate large mixing bowl, combine the egg whites, vanilla extract, sea salt, ground cinnamon, and matcha powder.
Whisk the egg white mixture vigorously for 1-2 minutes until the matcha is fully dissolved and the liquid becomes frothy and aerated.
Gently stir the mashed banana into the egg white mixture until the batter is uniform in color and texture.
Heat a large non-stick skillet over medium-low heat and lightly coat the surface with the coconut oil.
Ladle approximately 3 tablespoons of batter onto the skillet for each pancake, keeping them small to ensure they are easy to flip without the structure of flour.
Cook for 3-4 minutes undisturbed until the edges are completely set and the bottom is golden brown.
Carefully flip the pancakes with a wide spatula and cook for an additional 1-2 minutes on the second side.
Slice the remaining banana into thin rounds while the final batch of pancakes finishes cooking.
Stack the warm pancakes on a plate and garnish with the fresh banana slices, white chocolate chips, and crunchy pumpkin seeds.