01 - Whisk together olive oil, Cajun seasoning, smoked paprika, garlic powder, onion powder, dried thyme, cayenne pepper, salt, black pepper, and lemon juice in a large bowl until well combined.
02 - Add shrimp to the bowl and toss thoroughly to coat evenly. Let stand at room temperature for 10–15 minutes to absorb flavors.
03 - If using wooden skewers, submerge them in water for 20–30 minutes to prevent charring during grilling.
04 - Thread marinated shrimp onto skewers, spacing each piece slightly apart to ensure even heat circulation and cooking.
05 - Heat grill or grill pan to medium-high temperature, approximately 400°F.
06 - Cook skewers for 2–3 minutes per side until shrimp turn opaque throughout and develop light char marks.
07 - Arrange skewers on a serving platter, sprinkle with fresh parsley, and accompany with lemon wedges.