Heat a waffle maker to medium-high.
Preheat oven to 375°F. Arrange bacon on a slotted broiler pan and bake until crisp, 15-18 minutes. Cool and finely chop.
In a large mixing bowl, whisk together both flours, brown sugar, baking powder and salt. Add in butter and milk. Fold in chopped bacon, pecans and oats.
In a medium bowl, whip egg whites until they form stiff peaks.
Fold half of the egg whites into the batter. Once incorporated, fold in the rest.
Brush the waffle maker with melted butter and pour in 1/4 cup batter for each waffle square. Cook for 5-6 minutes or until slightly brown and crisp.
In a small saucepot, combine maple syrup, bourbon and butter until bubbly. Remove from heat and serve over pancakes.