I take the bulk of my food, as I need to bring my own for religious dietary reasons.
I take already cooked frozen food (e.g. chicken, rice, meatballs, chow mein, rice, fish), refrigerated food (e.g. salami), bread, snacks, cereal, even milk and orange juice. I have never had a problem.
I put them in those aluminized insulated bags along with freezer packs.
Pillsbury "pop and fresh" tubes most likely will not "explode," as the luggage holds in planes are now pressurized. After all, they can also ship live animals in there!
The only oddity I've encountered is that the NSA virtually always opens and inspects my bag, I assume due to the aluminized bags looking odd on the X-Ray machines.