Preheat oven to 450°F

Combine panko, pepper and salt in a shallow dish. Pour buttermilk into another shallow dish.

Dip chicken tenders in buttermilk; dredge in panko mixture. Place chicien on a wire rack; let stand 10 minutes. While chicken stands, place a jelly-roll pan in the oven to heat.

Coat chicken well with cooking spray. Remove hot pan from oven; coat with cooking spray. Arrange chicken in a single layer on a pan. Bake at 450°F for 23 minutes or until chicken is lightly browned.