Add the oil to a large pot. Add the sausage links and cook over medium heat until seared on all sides and cooked through, 5 to 10 minutes. Remove the sausage from the pan and set aside to cool, reserving the oil in the pot. When the sausage is cool, use kitchen shears or a knife to cut the links into bite-size pieces.

Add the onion and garlic to the pot with the reserved oil from the sausage. If your pot needs a little more oil, add more here. Stir and cook the onion and garlic over medium heat for about 5 minutes. Add the chili powder, paprika, oregano, cumin, salt, pepper, cayenne, and cinnamon and cook until fragrant. Add the ground beef and cook until the meat is brown, 8 to 10 minutes. Mix in the tomato paste, diced tomatoes, and tomato sauce, then add the bell peppers and cooked sausage. Cover and simmer over low heat for 1 hour. Add more salt to taste. Serve with sour cream and chopped cilantro (if using).

Substitution Note: To make this vegetarian, swap out the chorizo and ground beef for low-carb vegan alternatives.