Chocolate Chip Pumpkin Muffins

Pumpkin puree (1 can ( oz))

Eggs (2)

Unsalted butter (melted, 1/2 cup)

Water (1/2)

Flour (1 3/4 cups)

Baking powder (1/4 tsp)

Baking soda (1 tsp)

Salt (1/4 tsp)

Sugar (1 1/3 cup)

Pumpkin pie spice (2 tsp)

Chocolate chips (1 1/4 cup)