In a large sauce pan, heat the olive oil over medium heat. Add the onion and sauté until translucent, about 5 minutes. Add the garlic and chopped chilies. Sauté for 2 minutes. Add the brown sugar, cumin, salt, pepper, and red chili flakes. Sauté for another minute and then add the pumpkin, chicken or vegetable stock, coconut milk, and Neocell Super Collagen Powder. Stir well. Reduce heat and cook until heated through, about 5-10 minutes.