Go to your nearest deli. Buy some sliced roast beef, slices of cheese, and roll them up. YUM! You can even put some mustard on. But I guess if you're on strict induction you may need to watch the amount of cheese. Do you happen to have leftovers from dinner - or make extra at dinner - that you can bring for lunch? No extra cooking required.
I also like to get those shrimp cocktail rings from the store and have those minus the cocktail sauce provided. I use either sugar free ketchup or mayo mixed with a little wasabi to dip them in. Also try one of the pre-prepped salads - should be able to at least find ceasar, chef, or greek as options.

Do you have a bento place nearby? Get some chicken or beef bento (Meat on a stick) minus the rice.

Other ideas:

-Smoked salmon and cream cheese roll ups.
-Celery sticks dipped in ranch.
-meat and cheese wrapped in a LC tortilla (small ones are 3g net usually)
-sashimi
-do a BK or McD's drivethru and get a bacon cheeseburger or two minus the bun.

Hope that helps.