Preheat oven to 350 degrees.
Combine flour, sugar, salt, baking soda, baking powder, and pumpkin pie spice.
In a separate bowl combine the eggs, vanilla, melted butter and canned pumpkin.
Make a well in the center of the flour mixture and place the pumpkin mixture in it. Stir until just moistened.
Fold in the chocolate chips.
Line the cups of a muffin tin with paper liners or grease with butter.
Spoon the batter into the muffin cups.
Bake the muffins for 25 minutes or until a toothpick inserted into the center of a muffin comes out clean.
For mini-muffins, start with 10 minutes and add 2 minutes until they are done.