In a medium mixing bowl, combine seasoning, butter, lemon juice and zest. Toss prawns until well coated. Tread on red onion, bell pepper, andouille, cherry tomato, and then prawn, piercing it twice. Repeat the same order of ingredients finishing with onion. Brush remaining creole mixture over the skewers.
Heat grill to 450-500ºF and just before putting the skewers, brush grates with oil, using tongs and paper towels. Place skewers on BBQ and grill for 5-6 minutes, turning once. Makes 4 skewers.