Pat the shrimp dry and soak them in buttermilk for 15 minutes.
Combine flour, cornstarch, paprika, garlic powder, cayenne, salt, and pepper.
Combine flour, cornstarch, paprika, garlic powder, cayenne, salt, and pepper.
Heat oil to 350°F (175°C).
Fry the shrimp for 2–3 minutes until golden and crispy.
Whisk together sweet chili sauce, hot sauce, honey, soy sauce, vinegar, and garlic.
Toss the fried shrimp gently in the firecracker sauce.
Mix mayonnaise, crab meat, Dijon mustard, lemon juice, Old Bay seasoning, and parsley until smooth.
Toast the brioche rolls with butter until lightly golden.
Spread crab aioli on both sides of each roll, add lettuce, tomatoes, and the glazed shrimp. Serve immediately with lemon wedges.