01 - Preheat your grill or grill pan to medium-high heat.
02 - In a small bowl, combine melted butter, minced garlic, parsley, lemon juice, salt, and black pepper. Mix well.
03 - Thread the zucchini rounds onto skewers, leaving a little space between each piece for even cooking.
04 - Brush the zucchini generously with the garlic butter mixture on all sides.
05 - Place the skewers on the grill and cook for 4-5 minutes per side, turning once, until the zucchini is tender and has light grill marks. Brush with additional garlic butter during grilling for extra flavor.
06 - Remove from the grill and, if desired, sprinkle with grated Parmesan cheese and extra parsley before serving.