01 - Preheat grill or grill pan to medium-high heat.
02 - Combine melted butter, minced garlic, parsley, lemon juice, salt, and black pepper in a small bowl. Mix thoroughly until well incorporated.
03 - Thread zucchini rounds onto skewers, leaving small gaps between pieces to ensure even cooking and proper heat circulation.
04 - Brush zucchini generously with garlic butter mixture on all sides, ensuring complete coverage for maximum flavor absorption.
05 - Place skewers on grill and cook for 4–5 minutes per side, turning once, until zucchini becomes tender and displays light grill marks. Apply additional garlic butter during grilling for enhanced flavor.
06 - Remove from grill and immediately sprinkle with grated Parmesan cheese and extra chopped parsley if desired. Serve hot as a side dish or appetizer.