Heat olive oil in deep 12-inch nonstick skillet or 5-quart saucepot and brown chicken and sausage over medium-high heat. Remove chicken and sausage and set aside.
Cook potatoes, onion and fennel in same skillet over medium-high heat, stirring occasionally, 10 minutes or until vegetables are tender and starting to brown. Stir in vinegar and roasted red peppers and cook 1 minute. Stir in Sauce and bring to a boil over high heat. Reduce heat to low, then return chicken and sausage to skillet. Simmer covered, stirring occasionally, 40 minutes or until chicken is thoroughly cooked. Garnish, if desired, with chopped fresh parsley.