01 - In a large bowl, whisk together olive oil, balsamic vinegar, minced garlic, dried oregano, smoked paprika, salt, and black pepper until well combined.
02 - Add the sausage pieces, bell peppers, and onion wedges to the marinade. Toss thoroughly to coat all pieces evenly. Allow to marinate for 10 to 15 minutes for optimal flavor absorption.
03 - Preheat a grill or grill pan over medium-high heat until hot.
04 - Thread the sausage pieces, bell peppers, and onion wedges alternately onto metal skewers or soaked wooden skewers, distributing ingredients evenly among all skewers.
05 - Place skewers on the preheated grill and cook for 12 to 15 minutes, turning occasionally, until sausages are cooked through and vegetables are tender with lightly charred edges.
06 - Transfer skewers to a serving platter, sprinkle with fresh chopped parsley, and arrange lemon wedges alongside for squeezing.