1.In A Large Resealable Plastic Bag, Combine The First Six Ingredients. Add Chicken In Batches; Toss To Coat. In A Large Skillet, Saute The Chicken, Red Pepper And Onion In Oil For 6-8 Minutes Until Chicken Juices Run Clear And Vegetables Are Crisp-Tender. 2.Meanwhile, Cook Fettuccine According To Package Directions. In A Saucepan, Combine The Milk, Cream Cheese And Parmesan Cheese; Cook And Stir Over Medium Heat For 5 Minutes Or Until Cheese Is Melted And Sauce Is Smooth. Drain Fettuccine; Top With Chicken Mixture And Sauce. Sprinkle With Toasted Walnuts.