Raw chicken that has been thawed in the fridge will have a moist texture to its surface whereas expired chicken will be slimy. You know it's time to throw out the poultry when it maintains its sliminess even after you wash it.

Why is my chicken slimy after thawing?

It can feel quite slimy once defrosted, but this is just the raw "juices" coming out. As it starts to go bad, the color fades to a shade of grey. Frozen chicken (and all frozen foods) are safe to eat indefinitely, but will lose taste and flavor the longer it is stored.

Can thawed chicken feel slimy?

Feel for Slimy Meat

Raw chicken should always feel moist, and slimy meat means that is no longer good for eating. Even after washing it, if it feels kind of sticky, that chicken has gone bad.