Some random thoughts:
1.) Make extra dinner so you have leftovers for the next day(s)
2.) buy small chicken breasts or other protein sources and cook ahead and eat it during the week (or freeze) I like the think sliced chicken breasts with a bit of broiled steak seasoning on them
3.) use precooked rice or cook something ahead of time (whole what cous cous is very easy) I buy precooked brown rice from the organic section of my store--I just zap it and it's ready. Ditto for frozen veggies.
4.) Slice up some veggies and dip in yummus :9 Pack some low fat cottage or string cheese, nuts, nut butters, etc
5.) You can often buy bagged salads, even those that come with nuts, seeds, and dressing (Fresh Express Pacifica is yummy) and you can often buy precut peppers, onions, etc. Top with some garbanzo beans, chicken, whatever
6.) Check you organic section for TV dinners. Some of them are rather tasty and surprisingly low in sodium (Annie's Kitchen?)
7.) Hit your co-irker over the head and steal their lunch. Consider it a "cheat" day ;-) :7 :7
I have been carrying myself a cooler with all my goodies in it but it still takes a few minutes to prepare....but alas, I am not Ms. I have a Personal Chef Oprah.