Start by browning the bacon until crisp. Remove the bits from the pan and add the crawfish. Sauté just until heated through. Return the bacon to the pan and stir. Remove the pan from the heat while you prep the dough. Cool the crawfish filling a bit and drain any moisture before adding it to the bread.
Heat the crawfish tails in the bacon grease, then add the crispy bacon bits back to the pan.
On a lightly floured surface, spread out the crescent roll dough. Pinch the seams together and use a rolling pin to flatten the dough into roughly a 10-by-14-inch rectangle. Drain any liquid from the crawfish and spoon half the filling down the center of the dough. Sprinkle over about 1/2 cup of cheese. Fold in the ends and then the side of the dough. Flip the roll onto a parchment-lined sheet pan and use a fork to poke a series of vent holes down the top.
Drain any cooking liquid from the pan before adding half the crawfish filling to the rolled dough sheet. Top with cheese.
Repeat the process with the remaining can of dough and crawfish filling. Sprinkle the remaining cheese along the top of each roll. Lightly salt the tops of the rolls.
Repeat with the remaining crawfish filling on the other dough sheet.
Bake at 350 degrees for 20 to 25 minutes or until dough is fully cooked and golden brown. Rest for 5 minutes before slicing.