1. Combine 1/4 cup panko, parsley, thyme, and crushed red pepper in a mini food processor; pulse to combine. Combine herb mixture with remaining 1/2 cup panko in a shallow dish. Place cornstarch and egg whites in separate shallow dishes. Sprinkle shrimp with salt and black pepper. Dredge half of shrimp in cornstarch, shaking off excess; dip into egg whites. Dredge shrimp in panko mixture; press to adhere. Repeat procedure with remaining shrimp.
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