Thanks, Wolf and Pajarita. I took a look at her feet and there's no visible sign of discolouration, sores or swelling. The soles are smooth and are a uniform pale pink colour while the tops of her feet are scaly and grey. They look pretty normal to me, but if you want me to try and get some pictures of her feet to post here, I'll do what I can. She's pretty squirmy though.

She's been a little cranky recently, but since there's been no difference in her poop, eating habits, sleep schedule, or other behaviours, I've mostly been putting that up to a few recent changes. Mainly the time change, and my dad (who she dislikes intensely) moving back permanently. Now that she's a more active bird with flight and trick training, she also dislikes spending most of the day in her cage more than she used to, especially since she's by herself when I'm at work. I'd love to get her a bigger cage, but until I get a few more paychecks, that's not in the cards yet. Ideally, I would get a flight cage, move a new birdy companion in, and then when they bond enough to live together, move them both in the large cage.
I've even thought about just parrot-proofing my room and letting her have free range since she doesn't tend to wander from her cage and playstand on her own, but I dunno if my parents would approve of that. :\
She was on a solar schedule until fairly recently, but between the shortening days, the time change, and my work schedule, she's only able to come out of the cage for about an hour before it gets completely dark outside. That's just not enough time for her to stretch her wings, get some exercise, and get enough social and cuddle time to be happy (or as happy as she can be under the circumstances). I'm still keeping an eye out for a companion for her, but it's the same deal as getting the new cage - I need to make a bit more money first. I really want to get a companion for her as soon as I can. I can tell being by herself all day is wearing on her.
I'm also looking into getting a different job. The call center job might be paying the bills for now, but I'm still only in training and I find working on the phones for any length of time to be seriously overwhelming and stressful (especially since my first paycheck doesn't come in 'till Friday). There's a couple openings within our local library chain, and even though the hours are few, the pay is twice what I'm getting now, so I'm hoping to get in there. Also, with a ratio of fewer hours to more pay, I won't have to be out of the house all day and will be able to focus on my animals, and on my other projects like my YouTube channels.