In a large Dutch oven or heavy-bottomed pot, heat 1 tablespoon of olive oil over medium-high heat. Add the ground turkey, breaking it up with a wooden spoon as it cooks. Season with a pinch of salt and pepper. Cook until no pink remains, about 7-8 minutes. Transfer the cooked turkey to a plate lined with paper towels.
In the same pot, add the remaining tablespoon of olive oil. Add the diced onions and cook until translucent, about 4 minutes. Add the bell peppers and continue cooking for another 3 minutes until they begin to soften. Stir in the minced garlic and cook until fragrant, about 30 seconds.
Add a splash (about 2 tablespoons) of water to the hot pan and scrape up any browned bits from the turkey.
Add all the dried spices (chili powder, cumin, oregano, smoked paprika, cinnamon, and cayenne) to the vegetable mixture and stir constantly for 30 seconds to toast the spices. Add the diced sweet potatoes and stir to coat them thoroughly with the spice mixture.
Return the cooked turkey to the pot. Add the fire-roasted tomatoes, tomato sauce, drained and rinsed beans, and chicken broth. Stir well to combine all ingredients. Bring the mixture to a boil, then reduce heat to maintain a gentle simmer. Cover partially with a lid.
Let the chili simmer for 30-35 minutes, stirring occasionally, until the sweet potatoes are tender when pierced with a fork and the flavors have melded beautifully. Taste and adjust seasoning as needed.
Serve hot with desired toppings such as Greek yogurt, fresh cilantro, sliced avocado, or a squeeze of lime.