Pre-heat oven to 350 degrees.
Grease bundt pan and lightly flour.
In large bowl, mix together flour, sugar, baking powder, baking soda, salt and cinnamon.
Add beaten eggs, oil, pumpkin, and chocolate chips. Mix well in bowl for 3 - 4 minutes.
Pour into bundt pan but do not spread mixture with a spoon. Instead, tap sides of pan to spread around.
Bake for one hour and ten minutes.
Let cool before removing from pan. Once cooled, turned pan upside down over large plate.
Mix together powdered sugar, vanilla and milk for the topping. Drizzle the icing over the top of the cake.