So like normal I was collecting candy in the basket in the 'trick or treating' section, and eventually got a handful of candy, like normal.

But when I opened this candy, I got a screen that said '2-visible Juicy Pomegranate Faelora egg added'
I don't remember eggs being a thing we could get from the handful of candy, or even what theme this is since it doesn't match the Faelora from this October event? I'm happy for the egg, but I'm worried it bugged out and gave me an old egg? Is this normal?

ToT themes have been a thing the entire time, they just have a very low drop rate. The ToT themes are separate from the Fest Zone Wild themes and the Boards/Brewing themes.
You can see the Themes available from ToT handfuls by going to the fall theme list and hitting the "Trick or Treating" text- that'll bring up the Halloween themes, and you can see the other two themes (Juicy Pomegranate Faelora and Strawberry Rhubarb Ny'vene) by hitting the text that says 'Other'.

Huh. I couldn't find the Juicy Pomegranate Faelora in the fall themed list, which is why I was so confused, but I did see it in the general Themed Pet Codex, that's why I thought it was a mistake, but I get it now, thank you!