Preheat your oven: Preheat your oven to 350°F (175°C) and line a muffin tin with paper liners or spray with non-stick spray.
Mix the wet ingredients: In a large mixing bowl, combine the pumpkin puree, sugar, eggs, and vegetable oil. Whisk until smooth.
Add dry ingredients: To the same bowl, add the flour, baking soda, cinnamon, and salt. Gently fold until just combined — be careful not to overmix, as it can lead to dense muffins.
Incorporate chocolate chips: Once the batter is nearly mixed, fold in the chocolate chips until evenly distributed.
Fill the muffin tin: Using a scoop or spoon, fill each muffin cup about ¾ full with batter.
Bake: Place the muffin tin in the preheated oven and bake for 18-20 minutes, or until a toothpick inserted into the center comes out clean.
Cool: Allow the muffins to cool in the pan for about 5 minutes before transferring them to a wire rack to cool completely.