Mediterranean veggie skewers are bursting with flavors from the Mediterranean region. Start by marinating cubes of halloumi cheese in a mixture of olive oil, lemon juice, minced garlic, dried oregano, and black pepper. Let the cheese marinate for at least 30 minutes. Thread the marinated halloumi cheese onto skewers, alternating with cherry tomatoes, olives, and chunks of red onion. Grill the skewers over medium heat for about 5-7 minutes, turning once, until the cheese is golden and the vegetables are slightly charred. Serve the skewers with a side of tzatziki sauce and warm pita bread for a complete Mediterranean meal.