Heat the oven to 350F. Combine the oats, egg, banana, salt, and baking soda in the bowl of a food processor or the jar of a blender. Puree until smooth. Mist an 8-inch nonstick skillet with nonstick cooking spray. Pour batter in and tilt the skillet to evenly disperse the batter. Top with chia seeds and fruit. Transfer to the oven and bake until brown and set, about 30 minutes. Meanwhile, combine the peanut powder and water until it reaches a pourable consistency. Remove the pancake from the oven, slice into quarters, and serve immediately, topped with peanut sauce.