01 - Heat a large skillet over medium heat. Add the ground beef and cook, breaking it apart with a spoon, until browned and no longer pink. Drain excess fat and transfer to the slow cooker.
02 - Add the diced onion, bell peppers, garlic, diced tomatoes with juice, kidney beans, black beans, corn, chili powder, cumin, smoked paprika, oregano, cayenne, salt, pepper, beef broth, and tomato paste to the slow cooker. Stir until evenly combined.
03 - Cover and cook on low heat for 6-8 hours or on high heat for 3-4 hours until flavors have melded and vegetables are tender.
04 - Taste the chili and adjust salt, pepper, or cayenne as needed. Serve hot with your choice of toppings such as shredded cheese, sour cream, cilantro, or jalapeños.