Double-skewer the shrimp with 2 metal skewers, one skewer through the thicker part of the shrimp and one close to the tail (wooden skewers will work too, but soak for 30 minutes in water first); skewer 6 shrimp per skewer set. Repeat with the remaining shrimp and skewers.
Mix together the paprika, garlic powder and coriander in a small bowl. Sprinkle both sides of the shrimp with the seasoning mixture, then sprinkle with salt and pepper. Drizzle the shrimp with olive oil. Grill until cooked through, 3 to 4 minutes a side.
Arrange the shrimp on the lettuce cups and drizzle with the Creamy Herb Sauce. Top with the cilantro and dill.
Creamy Herb Sauce:
Combine the yogurt, cilantro, dill, mayonnaise, chili paste and garlic in a mixing bowl. Add the lemon juice as needed to make the sauce as thick, thin or acidic as you'd like. Season with salt and pepper.