Break the egg into the bowl of a stand mixer, discarding the shell. Using the wire whisk attachment, beat until frothy on Medium-High speed (about 2 minutes).
Add the flour, milk, sugar, baking powder, baking soda and kosher salt to the bowl of the stand mixer and mix until just combined. Use a rubber spatula to scrape down the sides of the bowl. Add the banana and mix briefly until just incorporated. Stir in the chocolate chips.
Meanwhile, heat a nonstick skillet on the stove on a burner set to just below medium heat. Drop the pancake batter onto the skillet by the ½ cup full. Cook until bubbly on the top, and dry-looking at the edges, and then flip. Pancakes will be golden brown on both sides when done.
Enjoy with fresh maple syrup.
Recipe by Maine Course at https://mainecourse.bdnblogs.com/2016/03/08/recipes/banana-chocolate-chip-pancakes/