1. Preheat the grill to medium heat and prepare vegetables.
2. Once vegetables are prepped, thread them onto wood or metal skewers.
3. Once skewers are made, mix the marinade together by combining olive oil, lemon juice, garlic, and oregano in a small bowl.
4. Brush the marinade over the skewered vegetables until they're covered.
5. Once the grill is hot and the skewers are oiled up, place them on the grill and cook for 12 to 18 minutes, rotating them occasionally.
6. Once vegetables are tender, remove them from the grill, let cool for a few minutes, then serve, and enjoy!