Preheat your oven to 350°F (175°C).
In a bowl, mix pumpkin puree and sugar until combined.
Add vegetable oil and egg, mixing until smooth.
In another bowl, whisk together flour, baking soda, and cinnamon.
Gradually add dry ingredients to the wet mixture until fully combined.
Fold in chocolate chips or nuts if desired.
Drop spoonfuls of dough onto a lined baking sheet.
Sprinkle with pumpkin seeds for extra crunch.
Bake for 12-15 minutes or until lightly golden.
Allow cookies to cool on a wire rack before serving.