01 - Heat a large heavy-bottomed pot or Dutch oven over medium-high heat. Add the ground beef and cook, breaking up with a spoon, until browned and cooked through, about 6–8 minutes. Drain excess fat if needed.
02 - Add the diced onion, red bell pepper, and jalapeño to the pot. Sauté for 4–5 minutes until softened.
03 - Stir in the minced garlic and tomato paste; cook for 1 minute until fragrant.
04 - Add chili powder, cumin, smoked paprika, cayenne, oregano, salt, and black pepper. Stir well to coat the vegetables and beef with the spices.
05 - Pour in the diced tomatoes with their juice, beef broth, kidney beans, and black beans. Bring to a boil, then reduce heat to low.
06 - Simmer uncovered for 45 minutes, stirring occasionally, until the chili thickens and flavors develop.
07 - Taste and adjust seasoning as needed. Serve hot, topped with cheddar cheese, and optional sour cream, cilantro, and scallions.