Timothy Reeves says he found what appears to be a chicken heart inside a 'crumbed and cooked' 'chicken tender'.
In the post he made to Facebook, Reeves wrote that he returned to the store after the discovery, where multiple employees confirmed what he'd found was a chicken heart.
He also wanted someone from the fast food giant to explain to him how a heart had ended up in his animal-based meal.
He wrote: "Uhh KFC can you explain to me why in the world I would be getting what looks like a chicken heart in my food?"
He added that he couldn't believe he had to write the message.
A KFC spokesperson explained to Daily Mail Australiathat this is not a one-off incident.
They said: "Our chicken is hand-prepared and cooked fresh, but occasionally mistakes happen and organs are not removed when they should have been.
"We have provided the customer with a refund and are reminding our team to take extra care."
Response to Reeves' Facebook post was split.
One commenter wrote: "Nothing wrong with a chicken heart. Delicious"
However, many argued that Reeves reaction was unwarranted, given that he was eating a dead animal.
A user in that camp wrote: "So you want to believe this chicken never had a heart, that it wasn't a living breathing being until it's throat was cut so you could 'enjoy it' Crazy, crazy people in total denial about where their food actually comes from."