Hi there. I have two of these plants. One's pretty healthy and the other is a bit of a big box store rescue. When I first got the rescue, the soil was soaking wet. I put it in sunlight and the leaves turned a yellowish speckled color, similar to your first picture. It's doing okay but it's not put out any new leaves.

Also, I just noticed that my healthy plant has a leaf or two, closest to the soil, with some yellowish speckles (see 2nd picture) but I don't remember if it was like that when I got it. It puts out new leaves regularly and they look pretty similar to your new growth leaves, just with a few more fenestrations. Hope this helps some and I hope your plant is a-ok.

Thank you Catherine! Your response makes me feel better!! ❤️

The important thing is to watch the new leaves. If they're coming out healthy looking then there's no problem. Older damaged leaves will stay like that until they age and fall off. They are more of an indication of what the plant has been through rather than the current conditions.