Heat the oil over medium-high heat in a large pot or skillet.
Brown the turkey, breaking up into small pieces.
Once the turkey is browned and almost cooked through, add the peppers and onions and sauté for 7-10 minutes.
Season with salt and pepper.
Add the turkey, peppers, and onions to the slow cooker along with the remaining ingredients. (If you have Tasty Taco Spice Mix, sub 4 tbsps of it instead of the Chili Powder, Cumin, and Garlic Powder). Stir to combine.
Cover and cook on high for 4 hours or on low for 8 hours. When chili is done cooking, taste for seasoning.
Serve with tortilla chips and creme fraiche. Note: This chili is even better the next day. Plan ahead!