Preheat the oven to 350°F (175°C). Line a muffin tin with paper liners.
In a medium bowl, whisk together the tigernut flour, baking powder, baking soda, cinnamon, nutmeg, and salt.
In a large bowl, mix together the maple syrup, melted coconut oil, pumpkin, eggs, and vanilla extract.
Add the dry ingredients to the wet ingredients and mix until just combined.
Fold in the chocolate chips.
Divide the batter evenly among the muffin cups.
Bake for 35-45 minutes, or until a toothpick inserted in the center of a muffin comes out clean.
Remove the muffins from the oven and let them cool in the tin for 5 minutes.
Transfer the muffins to a wire rack to cool completely