In a freezer bag, marinate the shrimp in the olive oil, chipotle powder, lemon pepper, garlic powder, parsley, and pepper flakes. Marinate at least 3 hours or overnight.
One hour before grilling, soak the skewers in water.
Skewer the shrimp, about 4-5 per skewer and grill on both sides until cooked through and slightly charred, about 3 minutes per side.
For the cream, combine the mashed avocado, sour cream, and lime juice together until a smooth consistency. If too think, add a teaspoon of water at a time until creamy. If too creamy, add more sour cream.
Serve the shrimp on top of the butter lettuce with the cream and choice of toppings. Serve with your preferred side choice.