Preheat oven to 450 degrees, line baking sheet with foil and coat with cooking spray.
Meanwhile place tortillas on a work surface. Top with cheese, chicken, corn, peppers, cilantro, and more cheese. Fold the top halof of the tortilla over the filling to form a semicircle, lightly pressing the edges to seal.
Place quesadillas on the baking sheet; lightly spray the quesadillas with the nonstick spray. Bake until lightly borwn, about 6 minutes.
Combine the sour cream, salsa and the remaining cilantro in a small bowl. Serve with the quesadillas.
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