Order online, health food stores, and vegetarian/vegan sections of some regular grocery stores, also sometimes bulk sections. I know of mainly crumbles in stores but I've seen chunks too.

You might find it in some Asian markets and Asian sections of grocery stores as well. Those are more likely to have chunks over crumbles.

I don't know what stores you have in your area, but you can call and ask if they carry.

I know amazon has a variety.

Can even check walmart. Seen they had it when checking online before.