In a large mixing bowl, combine flours, sugar, chocolate chips, cinnamon, baking soda, baking powder & salt.
In a separate mixing bowl, whisk together pumpkin, eggs, milk, vanilla and butter.
Stir pumpkin mixture into dry mixture until well combined.
Line muffin tin with silicone liners and fill each 3/4 of the way full.
Bake muffins at 375 degrees for 20 minutes, till toothpick comes out clean.
Let cool completely before removing from liners.
Store in the refrigerator.