Yeah, you’re reading this right, the do-no-wrong-best-retailer-in-the-business Costco might have just screwed up. A proposed class action lawsuit has reportedly been filed in San Diego claiming that Costco’s labeling on its famed $4.99 rotisserie chicken contains “No preservatives, MSG, gluten, artificial flavors, or colors” is…foul (fowl?). The suit alleges that the chickens contain “additives sodium phosphate and carrageenan.” We have no scientific definition of what those are, but they sound suspicious. On the best-retailer-we-know plus side, Costco now says it will remove the “no preservatives” signage and explains that these substances “support moisture retention, texture, and product consistency during cooking. Both ingredients are approved by food safety authorities.” OK, Ok, although watchdog consumers don’t want you to have to read the small print. This has to count as a blemish on a company that has just about the best reputation in the retail world, not to mention the most loyal customer base. We’re fans of their chicken, by the way, and this misstep isn’t going to stop us from getting just about the best bargain out there. But Costco has clearly lost a game of chicken with its customers.