Preheat oven to 400 degrees. Season chicken with salt and pepper, set aside on a sheet pan lined with foil or parchment. Mix together all ingredients for the sauce in a small pan. Bring to a boil, then reduce to a simmer and cook until thickened, stirring frequently, about 5-10 minutes. Reserve a small amount of sauce for serving. Use the remaining teriyaki sauce to coat all sides of the chicken. [Veggies would be coated in oil and seasoning, then go on the sheet pan at this time surrounding chicken] Cook chicken and veggies for 30-45 minutes, turning halfway thru, until done. Serve with remaining sauce, and rice or noodles.