I've found the antidote in Los Angeles:

. . . about nothing in particular.
Now, thanks to this article in the New York Times, I have learned that this packaging is called "clamshell" and that there is a reason for this madness.

As the night wore on, good news turned to bad and joy turned to disappointment. The delicious meal that I enjoyed earlier that evening no longer sat so well with me. Since then, each time I face a plate of Penne alla Vodka, memories of that night flood back and my stomach begins to churn.
I have been feeling more and more nervous about the outcome and my previous cautious optimism has now given way to high-anxiety. It gave me no comfort to read in the NY Times that many other Americans share these feelings with me.