Heat oven to 350°F. Cook noodles to desired doneness as directed on package. Drain. Meanwhile, in medium bowl, combine spinach, pesto and Alfredo sauce; mix well. Set aside.
Heat oil in large skillet over medium-high heat until hot. Add onion; cook and stir 3 to 4 minutes or until almost tender. Add ground chicken; cook 4 to 5 minutes or until no longer pink, stirring frequently. Stir in spaghetti sauce.
To assemble lasagna, place 1/3 of sauce mixture in ungreased 13x9-inch (3-quart) glass baking dish. Cover with 3 cooked noodles. Top with half of spinach mixture, then 3 noodles and 1/3 of the sauce. Sprinkle with half of the cheese. Cover with 3 noodles. Top with remaining half of spinach mixture, remaining 3 noodles and remaining 1/3 of sauce. Spray sheet of foil with nonstick cooking spray. Cover baking dish with foil, sprayed side down.
Bake at 350°F. for 20 minutes. Uncover; sprinkle with remaining half of cheese. Bake an additional 20 to 25 minutes or until cheese is melted and edges are bubbly. Let stand 10 minutes before serving.