Place the egg whites, protein powder, oats, Greek yogurt, cinnamon, vanilla, baking powder, and sea salt into a high-speed blender.
Process the mixture until the oats are fully broken down and a smooth, thick batter forms.
Slice the banana into thin, even rounds.
Heat the coconut oil in a large non-stick skillet over medium heat, ensuring the surface is well-coated.
Arrange the banana slices in the skillet and sear for about 1 minute until they begin to sizzle and caramelize.
Pour the pancake batter directly over the banana slices to form three or four small pancakes.
Cook for 2-3 minutes until bubbles appear on the surface and the edges look set.
Carefully flip each pancake and cook for another 1-2 minutes until the bottoms are golden brown and the center is cooked through.
Transfer to a plate and serve immediately with the caramelized banana side facing up.