You can find a good balance of food at most university's. I had a meal plan and loved it cause it usually all you can eat..my advice in that aspect would be to just avoid the obvious "junk" food (pizza, ice cream, French fries, soda, brownies, cookies pastries of all sort) these foods provide little to no nutrients and plenty of calories.
Get plenty of lean meats (baked or grilled chicken baked or grilled fish, lean steak/pork)
Macros for a 40/40/20 split would be 300 grams of carbs/300 grams of protein/66 grams of fat
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