Rubs work just as effectively as a marinade, and if you're working with the grill, you'll avoid flare ups and smoke without missing out on the flavor.
Combine the ½ cup of salt, brown sugar, grains of paradise, lemon zest, cayenne, and dried thyme in a small bowl to make the rub. In a large bowl, mix ground turkey, seasoned breadcrumbs, onion, egg whites, parsley, garlic, 1 teaspoon of salt, and pepper. Form into 12 patties. Coat each patty with the lemon pepper rub. Cook the patties on grill over medium heat, turning once, 4-5 minutes on each side. Place the patties, lettuce and tomato on the buns.