Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners.
In a large bowl, combine the pumpkin puree, vegetable oil, and sugar.
Beat in the eggs one at a time, followed by the vanilla extract.
In another bowl, whisk together the flour, baking soda, baking powder, salt, cinnamon, and nutmeg.
Gradually stir the dry ingredients into the wet mixture until just combined.
Add the chocolate chips and fold them into the batter gently.
Divide the batter evenly among the muffin cups, filling each about 2/3 full.
Bake in the preheated oven for 20-25 minutes or until a toothpick inserted comes out clean.
Remove from the oven and let cool in the tin for 5 minutes.
Transfer the muffins to a wire rack to cool completely.