In large bowl combine soup, mayonnaise and lemon juice. Add the chicken, onion, peppers, 1/2 cup of monterey jack cheese and 1/2 cup cheddar cheese; mix well. add noodles and toss to coat. Transfer to a greased 2 qt. baking dish. Bake uncovered, at 350 for 30-35 minutes. sprinkle with remaining cheeses. Bake 10 minutes longer or until vegetables are tender and cheese is melted.