Begin by rinsing the raw shrimp under cold water. Pat them dry with paper towels to remove excess moisture.
In a large bowl, combine the skim milk, egg whites, and hot sauce. Whisk until well mixed. Add the shrimp to the marinade and marinate for at least 30 minutes in the refrigerator.
In another bowl, mix together the cornstarch, flour, garlic powder, paprika, and a pinch of salt. Stir until evenly combined.
Remove the shrimp from the marinade, let excess drip off, then dip into the dry coating mixture. Ensure each shrimp is well coated.
Heat oil in a frying pan or deep fryer to 350°F (175°C). Fry the breaded shrimp in batches for about 2-3 minutes on each side, until golden brown and crispy.
In a small bowl, mix together the Greek yogurt, chili garlic sauce, honey, and lemon juice. Adjust seasoning to taste.
Toss the fried shrimp in the Bang-Bang sauce until well coated and serve immediately.