In a large skillet, brown the beef, onion and jalapeno until meat is no longer pink; drain. Transfer to a 3- or 4-qt. slow cooker. Stir in the cream cheese, tomato sauce, chilies, Parmesan cheese, ketchup, garlic, chili powder and oregano.
Cover and cook on low for 2-3 hours or until heated through. Stir; serve with chips.