I've never canned bacon, but BexarPrepper has two videos about it (this was the first one I saw years ago). How-to:
Taste test one year later (+ bonus spaghetti carbonara recipe from prepper food storage):
And this lady has an interesting tip to make the slices nicer going into the jar and come out with less liquid:
(When oven-frying the bacon, cook it on parchment and it doesn't shrink and get all wonky)