Preheat oven to 450°.
To prepare pesto, combine first 7 ingredients in a blender or food processor; process until smooth.
To prepare chicken, remove and discard giblets and neck from chicken. Rinse chicken with cold water; pat dry. Trim excess fat. Starting at neck cavity, loosen skin from breast and drumsticks by inserting fingers, gently pushing between skin and meat. Rub pesto under loosened skin and over breast and drumsticks. Lift wing tips up and over back; tuck under chicken. Place chicken, breast side up, on a broiler pan coated with cooking spray; bake at 450° for 30 minutes. Reduce oven temperature to 350° (do not remove chicken from oven); bake an additional 1 1/2 hours or until a thermometer registers 180°. Let stand 10 minutes. Discard skin.
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