Step 1: In a large bowl, whisk together the olive oil, lemon juice, minced garlic, oregano, salt, and pepper.
Step 2: Add the cubed chicken to the bowl and toss until thoroughly coated. Cover and marinate in the refrigerator for at least 30 minutes.
Step 3: In a separate shallow dish, combine the Italian breadcrumbs, Panko, Parmesan cheese, and lemon zest.
Step 4: If using wooden skewers, soak them in water for at least 20 minutes to prevent charring.
Step 5: Take each piece of marinated chicken and dredge it in the breadcrumb mixture, pressing firmly to ensure an even and thick coating.
Step 6: Thread the breaded chicken pieces onto the skewers, leaving a little space between each piece for even cooking.
Step 7: Preheat your grill or oven to 400°F (200°C). If baking, place the skewers on a wire rack over a baking sheet.
Step 8: Cook for 12-15 minutes, turning halfway through, until the chicken reaches an internal temperature of 165°F and the outside is golden brown and crispy.
Step 9: Garnish with fresh parsley and serve with extra lemon wedges.