Preheat grill to 375ºF. Prepare wooden skewers by soaking in water.
Place 36 shrimp, deveined and peeled in a large bowl. Drizzle with 1 tbsp olive oil and toss to coat.
Season with 1/2 tsp salt, 1/4 tsp ground black pepper, 1 tsp garlic powder and 1 tsp lemon zest. Toss to coat all of the shrimp.
Thread each shrimp onto the skewers, placing up to 5 shrimp on each skewer. Leave a little space between each shrimp.
Cook the shrimp for 2-3 minutes on each side turning once, until the shrimp have turned pink. Remove from the grill squeeze lemon wedges (optional) over shrimp and enjoy!