Coat chicken with flour. In large skillet, heat olive oil over medium-high heat; cook chicken until browned, turning once (15-20 min.). Add green pepper, garlic and pasta sauce to skillet; continue cooking until peppers are tender and sauce is heated through (10-15 min.). Prepare fettuccini according to pkg. directions.
To Serve: Serve chicken and sauce over pasta; grate Parmigiano over top. Serve immediately.