If a book is “OwnVoices,” do agents expect us to mention that in the query? What are the preferences in the industry right now? For context, my book has a physically disabled protagonist and I have the same disability.

I wouldn't use the term "Own Voices", it's fallen out of use in recent years. (I won't rehash all that here, for more context, you can see this essay, or this reddit thread!)Authors shouldn't feel forced into disclosing anything they don't want to disclose to agents/editors/readers. That being said, if you WANT to disclose your personal connection to the story, I think that would be very welcome. You don't need to make it into a WHOLE THING, I would just mention something briefly in the bio s...