01 - Heat a large Dutch oven or heavy-bottomed pot over medium-high heat. Add ground beef and cook until browned throughout, breaking it up with a wooden spoon. Drain excess fat if desired.
02 - Add diced onion, bell peppers, jalapeños, and garlic to the pot. Cook for 5–6 minutes, stirring occasionally, until vegetables are softened and fragrant.
03 - Stir in chili powder, cumin, smoked paprika, cayenne, oregano, salt, black pepper, and sugar. Cook for 1 minute until spices are fragrant, stirring constantly to prevent burning.
04 - Add tomato paste, diced tomatoes with their juices, and beef broth. Stir thoroughly to combine and dissolve tomato paste into the liquid.
05 - Bring mixture to a simmer, then reduce heat to low. Cover and cook for 45 minutes, stirring occasionally to prevent sticking.
06 - Stir in drained kidney beans. Simmer uncovered for 20–30 minutes, stirring occasionally, until chili reaches desired consistency.
07 - Taste and adjust salt, pepper, or heat level as needed. Serve hot garnished with cilantro, sour cream, cheddar cheese, or green onions if desired.