Whisk together the flour, salt, baking soda, and baking powder in a mixing bowl.
In a separate mixing bowl, whisk together the greek yogurt, maple syrup, vanilla, and melted butter. Whisk in the eggs.
Add the dry ingredients to the wet and stir until just combined with a rubber spatula (do not over mix).
Fold in the mini chocolate chips.
Spray a mini muffin pan with nonstick spray.
Distribute the batter evenly into the muffin pan and top with additional mini chocolate chips, if desired.
Bake the mini muffins at 350°F for 12-14 minutes, or until a toothpick inserted comes out clean.
Coo the muffins for 2-3 minutes in the pan, then remove them onto a wire cooling rack to cool completely.