Step 1: Sauté Aromatics : Heat olive oil in a large pot over medium heat. Add onion and bell peppers, sauté for 5–6 minutes until softened. Stir in minced garlic and cook for 1 minute until fragrant.
Step 2: Cook the Turkey : Add ground turkey to the pot, breaking it apart with a spoon. Cook until browned and no longer pink, about 5–7 minutes.
Step 3: Add Remaining Ingredients : Stir in black beans, diced tomatoes (with juice), pumpkin puree, and chicken or vegetable broth. Add chili powder, smoked paprika, cumin, cinnamon, salt, and black pepper. Mix well.
Step 4: Simmer : Reduce heat to low and let chili simmer for 20–25 minutes, stirring occasionally. Adjust seasoning as needed. The chili should thicken slightly and develop rich flavor.