01 - Whisk together olive oil, lemon juice, Cajun seasoning, smoked paprika, garlic powder, onion powder, cayenne pepper, thyme, oregano, salt, and black pepper in a large bowl until thoroughly combined.
02 - Add shrimp to the bowl and toss well to coat evenly. Cover and refrigerate for 10–15 minutes to allow flavors to penetrate.
03 - Preheat grill or grill pan to medium-high heat. If using wooden skewers, soak them in water for at least 20 minutes prior to threading to prevent burning.
04 - Thread marinated shrimp onto skewers, piercing through both the tail and head end to ensure stability during cooking.
05 - Grill shrimp skewers for 2–3 minutes per side, turning once, until shrimp are opaque throughout and display light charring.
06 - Remove skewers from grill, garnish with chopped parsley, and serve immediately with lemon wedges on the side.