Submerge 6 skewers into a baking dish filled with water until ready to thread chicken and vegetables. This will prevent skewers from burning.
In a large bowl, whisk together Roasted Garlic Ranch, ranch seasoning, and garlic cloves.
Cut the chicken tenderloins into 1 1/2-inch chunks and fold into marinade. Cover and allow to marinate for 20 minutes.
Preheat oven on medium broil. Line a large baking sheet with foil. Set aside.
Thread the chicken onto six presoaked wooden skewers. Transfer to prepared baking sheet and place in oven to roast. Roast for 25-30 minutes until the chicken is cooked through, flipping every 10 minutes.