Cook turkey, onion, and pepper in a large skillet over medium-high 8-10 minutes until browned and cooked through, breaking turkey into small pieces.
Add jalapeños and garlic; cook another 2 minutes, stirring frequently.
Transfer to slow cooker; add black beans, pinto beans, tomatoes, tomato sauce, and broth.
Stir in chili powder, cumin, paprika, cayenne, oregano, salt, black pepper, and hot sauce until combined.
Cover; cook on LOW 5-7 hours or HIGH 3-4 hours to develop flavors.
Adjust heat with hot sauce or cayenne to taste; serve hot with cheese, sour cream, jalapeños, and warm cornbread.