Preheat the oven to 350 degrees. Spray a bread pan with cooking spray and set aside.
In a medium-size mixing bowl, cream together the egg and cane sugar. Add the avocado oil, vanilla extract, and pumpkin puree. Stir until creamy.
Add the cassava flour, gluten-free flour blend, and baking soda. Stir together. Add the chocolate chips and pecans and fold them into the batter.
Pour the batter into the prepared loaf pan, smoothing evenly into the pan using the back of a spoon.
Bake for 40-45 minutes, or until a knife inserted into the middle of the loaf comes out clean.
Store leftovers in an airtight container for up to 4 days.