Where you say this is since you’ve moved, perhaps it is a dietary lack (different hay? Grain? Graze? Terrain?). If hooves are shelly/flakey/chippy, my first thought would be hydration and/or lack of copper/iodine/selenium/biotin, any or all of the above, tho these are certainly not the only causes or possibilities. Maybe have your hay analyzed, if possible.
Sure there's right and wrong but mostly there's just a whole lotta different.