Preheat the oven to 350 degrees. Line a baking sheet with parchment paper and set aside.
In a large bowl, whisk together all of the dry ingredients. In a second bowl, whisk together all of the wet ingredients. Add the wet ingredients into the dry and stir well to combine. Add in the chocolate chunks and stir again.
Using a heaping tablespoon measure, roll the cookies into balls and line them up on a baking sheet, leaving 3 inches between each cookie. Gently press down on the cookies to make them into a flat cookie shape. Bake for 9 minutes and remove from the oven. Let them cool for 3 minutes on the baking tray and then transfer them to a wire cooling rack. Sprinkle them with salt flakes, if desired and serve.