Click on the following link for a (hand-drawn, limited) map of campus eateries.
Student Union:
Many options on various floors: sushi, pizza, salads, Chinese, Falafel, Shawarma, student-bar, burgers, etc.
Physics Department:
Nice vegetarian buffet style restaurant (Asian).
Chemical Engineering:
Druze food.
Computer Science:
Two coffee shops with pastries and some dishes (salads, pasta, etc.)
HPS2 (Industrial engineering):
Cafeteria on lobby floor.
Ziv Square:
More options: Hummus, Italian, etc.