Sally, yes the larger not as healthy looking leaves are original growth. They've always been a bit darker than the other leaves but the brown spots developed over the summer.
Unfortunately, it's already in the sunniest spot in my apartment. It gets some direct sunlight, mostly in the morning and early afternoon. It's just after 2:30pm now and it only has indirect sunlight. I believe that window faces southeast (ish.)
My cousin gave it to me in that pot; she has 2 other aloes in similar pots that are doing great. I think when I repot the baby aloe though I'll use a longer, more shallow one. 😊