Maybe you are stressed out!! Because anybody can break out I mean I'm not a doctor but I have pimples on my back I suppose its the same for your front
You can get acne or pimples any where on your body because you have pores everywhere on your body and they can easily get clogged.
It could be an allergic reaction to something. If you can see a doctor that's the best thing to do.If you are unable to see a doctor, you could check online at webmd.com