In a large skillet over medium heat, heat vegetable oil. Add the onion, peppers, jalapenos and garlic. Stir to coat all the vegetables in oil and reduce heat. Cook about 15 minutes or until the vegetables are tender. Transfer the vegetables to the crock pot.
Return the skillet to medium heat and add the ground beef and chorizo. Saute until browned and add to the vegetables.
Add the remaining ingredients to the slow cooker and stir to combine.
Cook on low for 5 hours.
Serve with optional sour cream and shredded cheese.