Preparing the Chili: Heat olive oil in a large pot or Dutch oven over medium heat. Add ground turkey and cook, breaking it up with a spoon, until browned and cooked through, about 5–7 minutes. Add diced onion, garlic, and red bell pepper; sauté 3–4 minutes until vegetables are softened. Stir in pumpkin puree, diced tomatoes, black beans, and chicken broth. Add chili powder, smoked paprika, cumin, cinnamon, salt, and pepper. Mix thoroughly. Bring the chili to a simmer, reduce heat, and cook uncovered for 15–20 minutes, stirring occasionally, until slightly thickened and flavors meld. Adjust seasoning with salt and pepper to taste.