Possibly or else it's another marketing ploy for people who just want to hatch chicks as a project.....
Not all Trader Joe's offer the fertile eggs, mostly in California, where we have the "odd" folks who think consumer eggs are better if they are cage free and if listed as fertile, means some rooster was involved, which is as close as they want to get to keeping their own chickens for eggs. Less appearance of "factory" chicken production. The marketing ploy is for people wanting to eat "the most natural."
Trader Joe's stores have no idea we try to hatch their eggs. Trust me. I've had discussions and email exchanges with the company.
I have a TJ hen I hatched in January 2011; gave two of her sisters away to folks starting their own flocks. Josie is the one I kept. She's an egg-laying machine!