Meanwhile, spray a skillet with cooking spray and heat over medium. Add ground turkey and season with 1/4 teaspoon salt and 1/8 teaspoon pepper. Stir and cook until no longer pink, approximately 5-6 minutes. Add marinara and heat through.
While turkey is cooking, add asparagus to a baking sheet. Drizzle with olive oil, sprinkle with remaining salt and pepper. Juice lemon over asparagus and then add about 1/4 teaspoon of zest; toss to coat. Bake for 8-10 minutes.
Serve pasta topped with turkey sauce; with asparagus and sliced apples on the side.