Step 1

Preheat oven to 425°F. Stir together crushed graham crackers, crushed pretzels, and ½ teaspoon of the salt in a shallow dish. Place flour in a separate shallow dish; place egg whites in a separate shallow dish. Sprinkle chicken evenly with pepper and remaining 1 teaspoon salt. Dredge chicken in flour; dip in egg whites, and dredge in graham cracker mixture. Coat chicken on both sides with cooking spray; arrange evenly on a wire rack set inside a rimmed baking sheet.

Step 2

Bake until golden brown, 16 to 18 minutes, turning once halfway through bake time.