Heat vegetable oil in a Dutch oven over medium-high heat; cook and stir chorizo in hot oil until heated through, about 2 minutes. Remove chorizo using a slotted spoon to a bowl.
Add the chopped onion to the Dutch oven and cook until softened, 8 minutes.
Add garlic, chiles, rosemary, cumin, oregano and cayenne and cook until fragrant, 2 minutes, season with salt.
Add the ground chicken and cook, breaking up meat with a wooden spoon, until cooked through, 5 minutes. Stir in reserved, cooked sausage.
Add tomatoes, beans, tomato paste and 2-3 cups of broth, making sure the Dutch oven won’t boil over.
Partially cover, reduce heat and simmer until chili is thickened slightly, 25 minutes.
Stir in cornmeal and cook additional 15 minutes.
Season to taste with salt.
Serve hot into individual bowls and let your guests go crazy with garnish at the fixins bar!