01 - Whisk together olive oil, lemon juice, minced garlic, oregano, paprika, salt, and black pepper in a large bowl until well combined.
02 - Add chicken pieces to the marinade, toss to coat thoroughly. Cover and refrigerate for at least 20 minutes or up to 2 hours for enhanced flavor.
03 - Heat grill to medium-high temperature, approximately 400°F.
04 - Thread chicken and vegetables onto skewers, alternating between peppers, onions, zucchini, mushrooms, and chicken for even cooking and presentation.
05 - Brush assembled kabobs with remaining marinade. Grill for 12-15 minutes, turning every 3-4 minutes, until chicken reaches internal temperature of 165°F and vegetables are tender with light char.
06 - Remove kabobs from grill and let rest for 2 minutes. Garnish with fresh parsley and serve with lemon wedges.