Colorful grilled veggie kabobs with fresh seasonal vegetables are a healthy, vegetarian cookout star. This clean eats, family-friendly dish adds vibrant nutrition and flavor to any barbecue spread.
Preheat your grill to medium-high heat (about 400°F) and soak wooden skewers in water for at least 20 minutes if using.
Cut the zucchini, bell peppers, and red onion into even 1.5-inch pieces to ensure even cooking; leave mushrooms and cherry tomatoes whole.
In a large bowl, toss all vegetables with olive oil, balsamic vinegar, garlic powder, dried oregano, kosher salt, and black pepper to coat evenly.
Thread the marinated vegetables onto skewers, alternating veggies for color and balance, and do not pack them too tight to allow for heat flow.
Grill kabobs over direct heat for 10–12 minutes, turning every 2–3 minutes for char and tenderness, until the veggies are just cooked through and lightly charred without becoming mushy.