Greek-style veggie skewers are a delicious and healthy option inspired by Greek cuisine. Chop a variety of vegetables such as cherry tomatoes, bell peppers, red onions, and zucchini into bite-sized pieces. In a bowl, whisk together olive oil, lemon juice, minced garlic, dried oregano, salt, and pepper. Toss the vegetables in the Greek marinade and let them sit for at least 30 minutes. Thread the vegetables onto skewers and grill over medium heat for about 10-15 minutes, turning occasionally, until they are tender and slightly charred. Serve the skewers with a side of tzatziki sauce and warm pita bread.