In a high-speed blender, combine the rolled oats, egg whites, Greek yogurt, protein powder, half of the banana, baking powder, cinnamon, vanilla extract, and sea salt.
Blend on high until the batter is completely smooth and uniform in texture.
Allow the batter to rest for 5 minutes; this helps the oats hydrate and the batter to thicken for fluffier pancakes.
While the batter rests, slice the remaining half of the banana into thin, even rounds.
Heat a large non-stick skillet over medium heat and add the coconut oil, swirling to coat the surface.
Pour the batter into the skillet to form three or four medium-sized pancakes.
Gently press the reserved banana slices into the top of each pancake while the first side cooks.
Once bubbles begin to form on the surface and the edges look set, flip the pancakes carefully.
Cook for another 2 minutes until the banana slices are caramelized and the pancakes are cooked through.
Transfer to a plate and serve immediately while warm.