Combine 1/2 cup panko breadcrumbs, parsley and red pepper flakes in a mini processor; pulse to combine. Combine this mixture with the remaining panko breadcrumbs in a shallow dish. Place the cornstarch in a shallow dish and the egg whites in a another separate shallow dish. Sprinkle the shrimp liberally with salt and pepper. Dredge the shrimp in the cornstarch, shaking off the excess; then dip into egg whites. Then dredge the shrimp in the panko breadcrumb mixture and press to adhere.
In a large non-stick skillet, heat enough oil over medium heat. Add the shrimp, but do not crowd them and cook about three minutes per side insuring that they cook through. When the oil starts to get dark, I cleaned out the pan and heated fresh oil.
Notes
Chive Aioli
Whisk together the yogurt, mayonnaise, chives, lemon juice and red pepper flakes in a small bowl. Serve with shrimp.