Mix cake mix and pumpkin together until well blended and all moist. Mix in chocolate chips. Now is where you get to choose. For cookies: drop by the spoonful on cookie sheet sprayed with non stick cooking spray and bake at 350 for 8 to 15 minutes, time depends on how big you make them.
For muffins: fill greased or lined muffin tins. You'll get about 16 muffins. Fill the muffin tin full, the batter won't rise that much. Bake at 350 for 22-25 minutes until a toothpick inserted in the center comes out clean.
Notes
Another variation for the cookies or muffins is to replace the chocolate chips with nuts. Then when cookies or muffins are cooled, drizzle with cream cheese icing (about 1 cup).