Prepare the Marinade: In a bowl, mix olive oil, lemon juice, minced garlic, parsley, salt, and pepper.
Marinate the Chicken: Cut the chicken into bite-sized pieces and marinate them in the olive oil mixture for at least 30 minutes. Over night preferred.
Bread the Chicken: In another bowl, mix breadcrumbs and grated Parmesan cheese. Coat the marinated chicken pieces in the breadcrumb mixture.
Skewer the Chicken: Thread the chicken pieces onto the soaked wooden skewers.
Cook: Grill the skewers over medium-high heat for about 8-10 minutes, turning occasionally, until the chicken is cooked through and the breadcrumbs are crispy and golden.
Prepare the Lemon Butter Sauce: While the chicken is grilling, melt the butter in a small saucepan over medium heat. Stir in the minced garlic and cook until fragrant, about 1 minute. Add the fresh lemon juice and let it simmer for about 2-3 minutes. Add salt and pepper to taste. Remove from heat and stir in the chopped parsley.
Serve: Drizzle the lemon butter sauce over the Chicken Spiedini just before serving.