Is it healthy to eat pizza once a week?

My family has pizza night every Friday. I usually have 2-4 pieces of pepperoni or cheese and then 1-2 pieces of a special one (BBQ Chicken, Hawaiian, etc...). Aside from the pizza, I eat really healthy food because my mom studied Japanese food and usually doesn't allow me to eat any junk food. Anyways, I was just wondering if having pizza once a week along with otherwise healthy diet and exercise would be okay for a 14 year old male.