Disclaimer: I am not trolling, I am an autistic person who doesn’t understand so many social nuances. Also I am from New Hampshire (97% white), so I just don’t have any close African-American friends that I am willing to risk asking such a loaded question.
wikipedia has fairly fleshed out histories:
https://en.m.wikipedia.org/wiki/Watermelon_stereotype https://en.m.wikipedia.org/wiki/Fried_chicken_stereotype