01 - Heat vegetable oil in a large pot over medium heat. Add diced onion and red bell pepper; sauté for 4-5 minutes until softened.
02 - Stir in minced garlic and chopped jalapeño; cook for 1 minute until fragrant.
03 - Add ground beef, breaking it apart with a spoon. Cook until browned and fully cooked, approximately 6-8 minutes. Drain excess fat if needed.
04 - Stir in chili powder, cumin, smoked paprika, cayenne pepper, oregano, salt, and black pepper; cook for 1 minute to release aromas.
05 - Add tomato paste and cook for 1 minute, stirring to combine thoroughly.
06 - Pour in diced tomatoes with juices, beef broth, and kidney beans; stir to integrate evenly.
07 - Bring mixture to a simmer, reduce heat to low, cover, and cook gently for 40 minutes, stirring occasionally.
08 - Taste and adjust seasoning as desired. For a thicker chili, simmer uncovered for an additional 10 minutes.
09 - Ladle chili into bowls and garnish with sour cream, shredded cheddar, chopped cilantro, or sliced green onions as preferred.