Preheat oven to 350 degrees. Lightly spray muffin liners with coconut oil and place into muffin tray. Combine dry ingredients and mix well. Separately, mix together the pumpkin, coconut oil, maple syrup, and eggs until well incorporated. Stir in chocolate chips. In parts, add in dry ingredients until just moistened. Using an ice cream scoop, fill muffin cups 3/4 way full. Bake for 15-25 minutes (depending on your pan and oven) until the center of the muffin is lightly browned and a toothpick comes out clean from the center.