Plaintiffs are seeking a class action lawsuit on behalf of people who purchased Costco’s rotisserie chicken in California and across the country. Costco’s famed $4.99 rotisserie chicken is under fire in a proposed class action lawsuit claiming that the big box warehouse falsely advertised that its birds were preservative free. In photos included in the complaint, Costco signs promote the chicken as being USDA Grade A and containing no artificial colors, preservatives or flavors. With a price tag under $5, Costco’s well-loved rotisserie chicken is cheaper than similar products at other grocery stores. Plaintiffs are seeking to bring a class action lawsuit on behalf of people who purchased the rotisserie chicken in California and across the country.