Lemon Pepper Chicken Kebabs

olive oil

fresh lemon juice

lemon zest

garlic cloves, (minced (1 Tbsp))

minced fresh rosemary

freshly ground black pepper, (them more to taste)

salt

lbs. boneless skinless chicken breasts, (diced into 1 1/4-inch pieces)

small zucchini, (sliced into 1/4-inch thick disks)

small yellow squash, (sliced into 1/4-inch thick disks)

large red onion, (peeled and cut into wedges)