For the waffles:
Preheat oven to 250 degrees and preheat waffle iron.
Sift together flour, brown sugar, baking powder and soda, salt, 2 Tablespoons of cinnamon, and ginger.
Whisk eggs in a large bowl until blended, then whisk in milk, buttermilk, pumpkin, and butter until smooth. Whisk in dry ingredients just until smooth.
Spray waffle iron with cooking spray and spoon 1/3 cup batter into waffle iron, spreading quickly. Cook according to manufacturer's instructions.
Transfer waffles to rack in oven to keep warm and crisp. Make more waffles in same manner.
For the candied bacon:
Add diced bacon to a fry pan, and cook on low until almost crisp, about an hour.
Drain the bacon and discard the grease and return bacon to pan. Add maple syrup and 1/4 teaspoon cinnamon and cook for another 5 minutes until crispy.