For an extra layer of flavor, try browning the chicken thighs before dicing them. Adjust the amount of red chile pepper according to your spice preference. A pinch of cayenne pepper can also be added for extra heat. If you don't have fresh pumpkin, canned pumpkin puree (not pumpkin pie filling) can be substituted. Use approximately 2 cups. For a vegetarian option, replace the chicken with firm tofu or chickpeas.