So I was wasting time in the hellpit that is reddit when I stumbled across this post:

https://old.reddit.com/r/PeterExplainsTheJoke/comments/17ig1tx/help_why_is_dominos_busy_peter/

The top comment explains the above image:

The FBI agent assigned with monitoring Peter here. Back in the 1990s, an easy way to predict if a “major American event” was about to happen was to see if the amount of pizzas being delivered to government buildings (eg. The Pentagon) had spiked. This method was able to predict events such as operation Desert Storm and the Monica Lewinsky story. Basically, the meme is saying that another “major American event” is about to happen. (Btw this method in question is called “The Washington Pizza Index”)

Then I went and checked the live data for that same Dominos location and found it is still substiantially higher than usual as of right now. And if it changes, here is a screenshot I captured at 5:40pm CST 10/28/23