I'd double check with your coach, but I'd think would be better to get the 4 packets then to skip. But the meat has other items you need too so I wouldn't make a habit out of it. I keep some frozen cut up chicken breasts in the freezer that I can heat up for those late nights, one of the reasons I still like my George Forman is it's quick to cook on if I'm running late.
I have occasionally done this when I have planned poorly and have nothing at home or work ready. But I agree that it shouldn't be done often. A 4th packet has got to be better than a missed meal IMHO.