Form the ground sirloin into 4 patties (can season with burger seasoning, if desired (add link to recipe) and pop them into the fridge to chill.
Prep and preheat the grill to medium heat and preheat the oven to 375 degrees F (because we’re going to multitask and get the bacon going at the same time).
Place bacon on a baking sheet lined with aluminum foil (for easy clean-up) and sprayed lightly with olive oil spray, and cover the top with freshly ground black pepper, to taste. I usually just make the whole package. Who doesn’t love extra bacon for breakfast? 😉
Cook the bacon for 12-18 minutes (depending on thickness and bacon used ) until beginning to crisp. Reference package directions for oven baking, if needed. Lay bacon onto paper towels to drain and cool.
Grill burgers until desired doneness (it's about 4 min per side for medium). Move the patties to one side of the grill and turn off the burner for indirect heat.
Place 1 heaping tablespoon of pimento cheese on top of each burger (or more, to taste), close the lid, and allow the cheese to melt. Transfer to a plate.
Place a couple of butter lettuce leaves on the bottom of each bun, then top with the burger, 2 slices of bacon, a tablespoon of maple bacon jam, optional mayo, and sliced pickled jalapeños.