Preheat your grill to medium-high heat. If using wooden skewers, soak them in water for 30 minutes to prevent burning.
In a large bowl, combine the shrimp, baby potatoes, and corn. Drizzle with olive oil and sprinkle with Old Bay seasoning, garlic powder, paprika, salt, and pepper. Toss until everything is evenly coated.
Thread the shrimp, potatoes, and corn onto the skewers, alternating between the ingredients.
Place the skewers on the grill and cook for about 10-12 minutes, turning occasionally, until the shrimp are pink and opaque and the potatoes are tender.
Remove from the grill and let rest for a few minutes. Serve with lemon wedges and garnish with fresh parsley.