If using wooden skewers, soak them in water for at least 30 minutes before grilling to prevent burning. Metal skewers can be used immediately.

In a large Mixing Bowl, whisk together the 3 tbsp olive oil, 3 cloves of garlic, 切碎, 1 tbsp balsamic vinegar, 1 tsp italian seasoning, 干, ½ tsp paprika, 烟熏, ½ tsp salt, ½ tsp salt, and 1 tsp lemon juice, 新鲜挤压 until well combined.

Add all the cut vegetables (2 zucchinis (切成1英寸厚的圆片), 2 bell peppers (混合颜色，切成1½英寸的块状), 1 red onion (切成1½英寸的楔形，分离各层), 8 oz chestnut mushrooms, 整个 (整个或大个切半), 1 cup cherry tomato, 整个, and 1 yellow squash (切成1英寸厚的圆片) if using) to the Mixing Bowl. Toss well to coat every piece in the marinade. Let sit for at least 10 minutes at room temperature, or cover and refrigerate for up to 4 hours for deeper flavor.

Preheat your Grill to medium-high heat, about 400°F. Clean and oil the grates well to prevent sticking.

Thread the marinated vegetables onto the skewers, alternating colors and types for even cooking. Keep pieces snug but not packed tightly — a little space helps them cook through. Place 1 cup cherry tomato, 整个 and 8 oz chestnut mushrooms, 整个 (整个或大个切半) between sturdier vegetables to protect them.

Place the skewers on the hot Grill. Cook for 10–12 minutes total, turning every 3–4 minutes with Tongs, until the vegetables are tender and have visible char marks. Brush with any remaining marinade during the first turn.

Remove the skewers from the Grill and transfer to a serving platter. Sprinkle with 2 tbsp parsley, 切碎，新鲜 and serve immediately with 1 tsp lemon juice, 新鲜挤压 wedges for squeezing over the top.