Are these chain rings worn enough to warrant a replacement?

I recently got a new chain and noticed that I was having some pretty bad chain skipping on the cassette. I ended up ordering a new cassette as it was obviously very worn and long over-due for a replacement. Anyways, while waiting for the new cassette to arrive I took a look at my crankset and am wondering if these chain rings are worn out enough to warrant a replacement as well.

The middle chain ring (the one I use the most) has a few spikes that look a bit lower than the rest, but the rest of them don't seem too bad (I think). Is this a major problem or not really? Anyways, just looking for some insight on this as I'm really not sure. Also, would it be possible to just replace just the middle chain ring or is that not really a thing that I could do? I only have been using the middle chain ring anyways, so if I could save some money and go that route, I would. Any help is appreciated, thanks.