01 - Whisk together olive oil, balsamic vinegar, minced garlic, dried oregano, smoked paprika, salt, and black pepper in a large bowl until well combined.
02 - Add sausage pieces, bell peppers, and onion wedges to the marinade. Toss thoroughly to coat all pieces evenly. Let stand for 10–15 minutes to absorb flavors.
03 - Heat grill or grill pan over medium-high temperature until hot.
04 - Thread sausage pieces, bell peppers, and onion wedges onto metal or pre-soaked wooden skewers in alternating pattern.
05 - Place skewers on grill and cook for 12–15 minutes, turning every 3–4 minutes, until sausages are cooked through and vegetables are tender with light char.
06 - Transfer skewers to serving platter, sprinkle with fresh parsley, and arrange lemon wedges alongside.