I live in the South (suburb of New Orleans)and I notice that black people pronounce “bedroom” as “bayroom”, “jewelry” as “jury”, and “children” as cheeren”. And when I listen to reality TV such as court shows and hear black people speak on those shows, they pronounce these words the same, so I don’t think it’s regional.
My wife lived part of her childhood in southeastern Arkansas and still has the accent LOL. She remembers a young black kid going a nearby store and saying Mr Tibbs I need some pepper. He asked what kind of pepper black pepper, white pepper etc. He said no not that kinda pepper we need toilet pepper. LOL