A way I've found to make the bacon crisper without changing the cooking temperature or cooking the ABTs longer is to flatten or stretch the bacon to make each slice thinner and a bit wider. The thinner slices will crisp nicely at lower temperatures of 275 or so.
To flatten the bacon, I'll lay a slice out on a cutting board then run the side of a heavy chef's knife along the length of the slice, applying a little pressure to the blade. This is the same principle as passing a sheet of dough through a pasta roller. A couple of passes like this will nearly double the length of the slice. The fat in the bacon provides plenty of lubrication to keep from sticking to either the knife or the board.
By stretching the bacon this way, it also means I can make two or three times more ABTs with the same amount of bacon. Since I serve ABTs 'on the half shell' using just half a jalap for each, one stretched and flattened slice of bacon is enough to wrap three typical ABTs and maybe four smaller ones.
The stretched bacon will tighten and shrink a little during cooking, but not to any appreciable extent. Between the filling, cheeses, and the bacon, ABTs are already rich enough that the difference in flavor overall between a 'stock' thick slice of bacon and my stretched version of it is insignificant.
I’ll also parboil the jalaps for four or five minutes each to ensure they’ll be tender enough without having to extend their cooking times on the grill/smoker/oven.
Hope these tips are helpful.
Ken