Combine the ground turkey, BBQ sauce, salt, garlic powder and pepper in a medium-sized bowl. Mix just until combined with your hands and shape into 4 patties about 3/4-inch thick. Make a well in your patties with your thumb to prevent from bulging.
Place patties on the grill and cook 4 to 5 minutes. Flip and then cook an additional 4-5 minutes, or until juices run clear and burgers have reached 180°F. Top with cheese slices, if desired. Grill until cheese has melted and turn off the heat.
Serve on buns or lettuce wraps with your favorite toppings.
Seasoning: If you like spice, add a dash of cayenne or some red pepper flakes. I also love to use this easy hamburger seasoning and top my burger with my favorite burger sauce. Make-ahead tip: Form the patties in advance and place in fridge until ready to grill.