Fry bacon to desired doneness. Set aside to cool. Then crumble into small pieces.
While bacon is frying, grate apple (or chop very finely).
While bacon is frying, prepare pancake batter by mixing flour, baking soda, salt and cinnamon. Then stir in eggs, milk, vanilla and oil until mixture is smooth.
Fold in half the bacon crumbles and grated apple.
Heat griddle or skillet to medium heat. Add batter 1/2 cup at a time to make 4-inch pancakes. Wait until batter bubbles, then flip, cooking for another 30-60 seconds.
Top pancakes with maple syrup and the remaining bacon crumbles.