Heat oven to 350°F. Into ungreased 8-inch square (2-quart) glass baking dish, spoon and spread 1 cup of the pasta sauce. Top with chicken tenders in single layer. Spoon remaining 1 cup sauce over chicken. Sprinkle with cheese.
Bake uncovered 30 to 35 minutes or until mixture is bubbly and chicken is no longer pink in center.
Meanwhile, cook spaghetti as directed on package; drain.
Serve chicken and sauce over spaghetti.