Preheat the waffle iron and melt butter, grab a small baker's brush.
In a large bowl add pancake mix, oil, chia seeds, oatmeal, and the buttermilk. Fold one egg at a time into the batter until all of the eggs are added. Do not over mix, doing so will result in tough waffles.
When the waffle iron is hot brush the top and bottom griddle with melted butter, spoon 3-4 tablespoons of waffle batter into the bottom griddle, add sever blueberries into the batter and close the lid. Cook the waffles until they are golden brown, brush more butter onto the finished waffles. Place finished waffles on a serving platter or plate, place the waffles into an oven set to warm. Repeat the process until all of the waffles are made. Top waffles with banana slices, fresh blackberries, and blueberries. Drizzle with warm maple syrup. Serve.