Using a stand or handheld mixer, beat egg whites and sugar until stiff peaks form.
Combine remaining ingredients (except the chocolate chips) in a separate bowl and stir together, making sure to not over-stir. Fold in the whipped egg whites, until just incorporated. Add chocolate chips.
Cook in waffle iron according to waffle iron instructions.
Top as desired, with whipped topping, nuts, fruit, berries, syrup, etc.
Makes between 6-8 waffles, depending on the size of your waffle iron.