Strange plant of Gelato...

I'm definitely a newbie but my first plant looked similar and the problem was nutrients. My soil was high in nitrogen from my addition of worm casings and when I gave her some the leaves started to turn white the new leaves followed the same pattern. I thought I was over watering so I backed off but it was the nutrients I was giving her. She later died but I learned my lesson. The soil I mixed was as they say to hot. I bought some foxfarm soil mixed it in and the rest has been great. I hope my answer helps good luck it fun when it goes right. Peace😎