Place the rolled oats in a high-speed blender and pulse until they reach a fine, flour-like consistency.
Add the protein powder, Greek yogurt, egg whites, half of the banana, cinnamon, vanilla extract, baking powder, and sea salt to the blender.
Blend on medium speed until the batter is completely smooth, then let it rest for 5 minutes to allow the oats to hydrate and thicken.
While the batter rests, thinly slice the remaining half of the banana into rounds.
Heat the coconut oil in a large non-stick skillet over medium-low heat.
Pour the batter into the skillet to form four small pancakes, then gently press the banana slices into the wet surface of each pancake.
Cook for 3 minutes until bubbles form on the edges, then carefully flip and cook for another 2 minutes until the banana slices are golden and caramelized.
Transfer to a plate and serve immediately while the fruit is warm and tender.