The article explains that the disturbing goo that can sometimes seep from cooked chicken is a natural occurrence called "scum." This goo is a coagulated mixture of fat, protein, and water that forms inside the chicken's cells and gets released when heated. It is safe to eat but may not be appetizing. The main cause of scum is freezing and thawing chicken multiple times, which damages the cells. To minimize scum, it is best to get fresh chicken and avoid repeated freezing. Overall, scum is a natural process that occurs in various foods and can be managed by understanding its causes.