1. Combine almond flour, salt, baking soda, and cinnamon in a large bowl.
2. In a blender or food processor, mix melted butter, maple syrup, eggs and pumpkin until very smooth.
3. Stir wet ingredients into the dry ingredients, then fold in the chocolate chips.
4. Grease muffin tins with additional melted butter.
5. Scoop batter into muffin tins. They probably won't rise too much, so you can fill the tins almost to the top.
6. Bake at 350° for 30 minutes, or until a toothpick inserted in the center comes out clean.
7. Allow to cool before serving.