01 - Preheat your grill or grill pan to medium-high heat.
02 - In a small bowl, mix the melted butter, minced garlic, parsley, lemon zest, salt, and pepper until well combined.
03 - Thread the zucchini rounds onto skewers, leaving a little space between each piece for even cooking.
04 - Brush the zucchini generously with half of the garlic butter mixture.
05 - Grill the skewers for 3–4 minutes per side, turning once, until the zucchini is tender and lightly charred.
06 - Remove from the grill and immediately brush with the remaining garlic butter.
07 - Sprinkle with Parmesan cheese, if using, and serve with lemon wedges.