To form perfectly cooked patties, consider using a burger press.
Preheat grill or griddle to high heat. Divide ground beef equally into three portions. For each portion, take about 2/3 of it and form it into a very flat patty with sides (again, this is super easy if using the burger press). Divide the jalapeno, bacon pieces, and cheese into three equal portions. Add 1/2 of the toppings to the meat. With the remaining 1/3, form the meat into a thin circle and top patty, sealing all edges. The goal is to have only ground beef on the outside and all of the toppings in the middle.
Cook over a hot grill or griddle, 5-8 minutes per side, until done. Enjoy!