01 - Preheat your grill or grill pan to medium-high heat.
02 - In a small bowl, combine the melted butter, minced garlic, parsley, lemon zest, salt, and black pepper. Stir until thoroughly blended.
03 - Thread the zucchini rounds onto skewers, leaving a small gap between each piece to ensure even cooking and proper heat circulation.
04 - Brush the zucchini skewers generously with half of the garlic butter mixture, ensuring all surfaces are evenly coated.
05 - Place skewers on the preheated grill and cook for 3 to 4 minutes per side, turning once, until the zucchini becomes tender and develops light char marks.
06 - Remove skewers from the grill and immediately brush with the remaining garlic butter mixture while hot for maximum flavor absorption.
07 - Sprinkle with grated Parmesan cheese if desired and serve immediately with fresh lemon wedges on the side.