In a large bowl, whisk the salt, baking powder, baking soda, flour, sugar, and cinnamon. Set aside.
In a medium size bowl add the egg yolks, buttermilk, vanilla extract, and melted butter. Mix to combine. I keep it simple and just use a fork and mix until the yolk is nice and broken up and combined with the other ingredients.
In a small bowl beat the egg whites until soft peaks form. Set aside.
Combine the wet ingredients with the dry ingredients. Mix for a few seconds (again, I just use a fork). When the flour and wet ingredients are partly combined fold in the fluffy egg whites and cinnamon chips. Don't over mix. It's fine to have small pieces of flour here and there.
Using a 1/3 measuring cup, scoop the batter onto a buttered 300°F griddle. Cook on each side for approximately 2-3 minutes. Serve warm with butter and maple syrup drizzled over the top.