01 - In a large bowl, whisk together the olive oil, lemon juice, garlic, oregano, paprika, salt, and pepper to create the marinade.
02 - Add the chicken pieces to the marinade, stirring to coat well. Cover and refrigerate for at least 20 minutes (or up to 2 hours for more flavor).
03 - Preheat your grill to medium-high heat.
04 - Thread chicken, peppers, onions, zucchini, and mushrooms onto skewers, alternating ingredients for color and flavor.
05 - Brush the assembled kabobs lightly with any remaining marinade.
06 - Grill kabobs, turning every 3-4 minutes, until the chicken is cooked through and the vegetables are lightly charred and tender, about 12–15 minutes.
07 - Remove from the grill and let rest for 2 minutes. Garnish with fresh parsley and serve with lemon wedges, if desired.