In a large stockpot over medium heat, add the olive oil, chopped onion, bell pepper, and garlic. Sauté for 8–10 minutes, until softened and fragrant.
Add the ground venison and cook until browned, breaking it apart as it cooks
Stir in the chili powder, cumin, paprika, garlic powder, onion powder, oregano, and salt. Cook for 1–2 minutes to allow the spices to bloom and coat the meat.
Add the crushed tomatoes, pinto beans, water or beef broth, Worcestershire sauce, and red wine if using. Stir to combine and bring to a gentle simmer.
Transfer the chili to a slow cooker. Cover and cook on Low for 4–6 hours, allowing the flavors to deepen and develop. If you prefer a thicker chili, stir in the cornmeal during the last hour of cooking and allow it to simmer until fully incorporated and slightly thickened.
Taste and adjust seasoning if needed before serving.
Garnish with sharp cheddar cheese, chopped green onions, and a dollop of sour cream. Serve with warm cornbread.