The yellowing is in the last two photos. It’s a bit hard to see on the pictures though. The yellowing is on the new growth, and the cotyledons are still greener than the new growth coming in.
Genetics are a bit of an unknown. It’s bagseed from a friend who said it was Gelato, but I can’t remember if it was a self pollenated hermie, or if it was pollenated by another plant that had hermied.