According to JEI, I should be able to put a Hatchery egg in a crafting table and get vanilla eggs. This does not work. Nor can they be used as eggs in Pam's Harvestcraft, which JEI also shows should be an option. These are eggs laid by Chickens chickens, taken from pens, mostly. They are not a generic Hatchery egg, but say a bone white chicken egg or coal chicken egg. Requesting uses for them shows that Hatchery eggs can be converted, or used directly with Pam's recipes. I'm guessing this is a bug?

Minecraft Version: 1.12.2
Forge Version: 14.23.1.2582
Hatchery Version: 1.12.2-2.0.0

I'll look into it, something may have changed in this version particularly

Well it appears to be an issue with nbt data in the new recipe system... atm Im not sure how to fix this. I could possibly fix this in a much later update. but not the next update.

That sounds like a pain. At least we have a use for them in the meantime. Lots of Lucky Eggs! :)

Closed my new issue as I realized you already have an issue open for this.
CraftTweaker adds recipes that don't care about NBT data. I'm using a CT script as a work around for the moment.

This isn't helping with oreDict egg recipes but with the conversion working I can deal with it. I'm using Storage Drawers to automatically convert the eggs I'm ducting out of the chicken pens >.>

So you might be able to ask the CT people how they do it.

I might actually be able to use CT to scrape all the recipes using oredict eggs and duplicate them substituting the hatchery egg, which would be a performance hit at server start, but a great quality of life improvement.

I'll gist my CT script when I get home and post it here in case other people find it useful until you find a solution.