Wash the zucchinis under cold water and slice them into thick rounds or half-moons.

Melt the butter in a small saucepan over low heat, then add minced garlic and simmer for 2-3 minutes until fragrant.

Combine sliced zucchini with olive oil, salt, and pepper in a mixing bowl. Pour in the garlic butter mixture and stir well.

Thread the seasoned zucchini onto skewers. Soak wooden skewers in water for at least 30 minutes prior to grilling.

Preheat the grill to medium-high heat (about 400°F/200°C) and grill the skewers for 8-10 minutes, turning occasionally.

Transfer skewers to a serving platter and drizzle with fresh lemon juice before serving.