We definitely understand the financial and time constraints that come with being a college student. While ramen is a staple for many college students, the high sodium content and unnecessary calories make it a less desirable choice. If you're looking for an alternative to instant noodles, try whole wheat pasta or brown rice. These options are much healthier, but are equally inexpensive and easy to prepare/cook.
Fresh or canned fruits and vegetables are also normally reasonably priced. Inexpensive protein sources are usually fresh chicken breast, eggs, beans, lentils, tofu, and turkey. Additionally, milk provides an excellent protein source from the dairy category and is usually pretty inexpensive. Finally, try oats for breakfast for a quick and nutritious start to your morning!