The phrase "quality chicken" means that the chicken is good in terms of taste, freshness, and overall value. It refers to chicken that is of high quality and meets certain standards. Full definition
When the source animal is named — such as a high quality chicken meal has much higher protein content after processing than a whole fresh chicken because most of the water has been removed. (dachshund-owner-guide.com)
Made with quality chicken meal protein, whole grain carbohydrates, pure chicken fat and vitamin preservatives. (precisepet.com)
Together, this indicates that the food contains a lot of good quality chicken protein. (dogfoodinsider.com)