Hello, I am an optician. Obviously the most comfortable way to wear a prescription inside an HMD is contact lenses (speaking of FOV). It is likely that contact lenses, and your eye, tend to dry quicker than normal inside a headset though...
If you want to stick to glasses, you should be careful to the frame's size (especially width) and shape. Ideally, the lenses should be as close as possible to the eyes. However it is kind of a standard for all frames (around 13mm). Obviously the glasses have to fit inside the headset but that should not be a problem, there is some room in there.
I would also advise slim branches because the headset will press them against your temples. It may be possible to make a small cut in the headset's liner to minimize that.
I don't think the FOV is an issue. As it was said, lenses are close enough to the eyes not to cause trouble unless they are unusually small. If you are a perfectionnist, the lenses' apparent size should be the same as the headset lenses' apparent size ; circle-shaped and slightly smaller than the HMD lenses, in other terms. (you can try to do the math !)
I strongly advise to go for an efficient anti-glare coating.
Now, you cloud also choose some sportish, curved frames but it would not be a wise idea. Sure, you will end up with a wide FOV... Wider than the headset FOV, actually, which doesn't make a lot of sense.
What's more, lenses for such frames also need to be curved. Unless they are specifically manufactured (Freeform surfacing), they will have peripheral aberrations. Depending on your prescription, the lenses will be thicker and heavier, or may even be impossible to manufacture.