In a bowl, combine olive oil, minced garlic, oregano, lemon juice, salt, and pepper.
Add the pork pieces to the marinade, ensuring they are well coated. Cover and let marinate for at least 30 minutes in the refrigerator.
Preheat the grill to medium-high heat.
Thread the marinated pork pieces onto skewers.
Grill the skewers for about 10-15 minutes, turning occasionally, until the meat is cooked through and lightly charred.
Serve the souvlaki hot with pita bread and your choice of sauce or side.