01 - Combine olive oil, Cajun seasoning, smoked paprika, garlic powder, onion powder, dried thyme, cayenne pepper, salt, pepper, and lemon juice in a large bowl. Mix until well blended.
02 - Add shrimp to the marinade and toss thoroughly to coat. Let sit at room temperature for 10–15 minutes to absorb flavors.
03 - If using wooden skewers, soak in water for 20–30 minutes to prevent burning on the grill.
04 - Thread marinated shrimp onto skewers, leaving small gaps between each piece for even heat circulation.
05 - Heat grill or grill pan to medium-high temperature.
06 - Grill skewers for 2–3 minutes per side until shrimp turn opaque and develop light charring.
07 - Transfer to serving platter, sprinkle with fresh parsley, and serve immediately with lemon wedges.