Heat peanut butter in microwave safe bowl just until warmed through, adding pinch of salt and pepper. Set aside. Preheat grill and cook burgers to desired temp, 140F for medium, melting cheese (if desired) on top of burgers for last 20-30 seconds. Meanwhile grill buns lightly, topping bottom bun with 1-2 T mayo, burger patty/ cheese, and top with pickles and bacon. Pour 2 T of peanut butter over bacon/burger and top with grilled bun. Serve immediately.