In a medium bowl, sift together the all-purpose flour, pastry flour, sugar, baking powder, and salt. Set aside.
In a large bowl, whisk together the eggs, canola oil, and milk. Add the yogurt and whisk to combine.
Add the dry mixture to the yogurt mixture. Stir to combine, taking care not to overmix. Fold in the chocolate chips.
Cut the bananas into ¼-inch-thick rounds.
Spray a large skillet with cooking spray and heat it over medium heat. For each pancake, drop a heaping ¼ cup of the batter into the skillet, and sprinkle 2 or 3 banana slices on top. Repeat, leaving about 2 inches between pancakes. Cook until the tops are bubbly and the edges are set, 2 to 3 minutes. Flip the pancakes over and cook for another 2 minutes, until golden and crisp. Transfer to a plate and cover with aluminum foil to keep warm. Repeat with the remaining batter and bananas.
To serve, place 2 pancakes on each of eight plates and drizzle 1 tablespoon of maple syrup over each stack.