01 - In a large mixing bowl, whisk together olive oil, lemon juice, minced garlic, dried oregano, paprika, salt, and black pepper until well combined.
02 - Add the chicken pieces to the marinade and stir to coat evenly. Cover and refrigerate for at least 20 minutes, or up to 2 hours for enhanced flavor.
03 - Set the grill to medium-high heat and allow it to preheat thoroughly.
04 - Thread marinated chicken, red and yellow bell peppers, red onion, zucchini, and mushrooms alternately onto skewers to create a colorful arrangement.
05 - Lightly brush the assembled kabobs with any remaining marinade for added flavor.
06 - Place kabobs on the grill and cook, turning every 3 to 4 minutes, until chicken is fully cooked and vegetables are lightly charred and tender, about 12 to 15 minutes.
07 - Transfer kabobs from the grill and let rest for 2 minutes. Garnish with freshly chopped parsley and serve with lemon wedges if desired.