01 - In a large mixing bowl, whisk together the olive oil, minced garlic, grated Parmesan cheese, lemon juice, Italian herbs, salt, black pepper, and crushed red pepper flakes until well combined.
02 - Add the chicken cubes to the marinade and toss thoroughly to coat all pieces evenly. Cover the bowl and refrigerate for at least 30 minutes, or up to 2 hours for deeper flavor penetration.
03 - Preheat the grill to medium-high heat. If using wooden skewers, soak them in water for at least 20 minutes prior to grilling to prevent burning.
04 - Thread the marinated chicken pieces onto the skewers, leaving a small gap between each piece to ensure even cooking on all sides.
05 - Place the skewers on the preheated grill and cook for 5 to 7 minutes per side, until the chicken is fully cooked through and develops a light char on the edges.
06 - Remove the skewers from the grill and transfer to a serving platter. Sprinkle generously with chopped fresh parsley and additional grated Parmesan cheese.
07 - Serve hot alongside lemon wedges for squeezing over the chicken.