so now I'm forced to eat out more often

I eat breakfast in the morning and have to go to work straight after school which leaves me no time to go to lunch. As a result, I'm forced to buy something from outside on my way to work so I won't starve. The options? Well, Dunkin Donuts, a Pizza shop, and Chinese. What should I do?

Chinese is surely healthier than donuts and probably healthier than pizza.  Just look for vegetable dishes.

Alternately, you could brown-bag it.  Peanut butter sandwiches are very retro, but they won't kill you, and it's way cheaper than eating out every day too.