In a large bowl, season the ground beef with a generous pinch of salt and pepper. Mix the seasonings into the meat and then divide the ground beef into four 1/4 pound portions.
Form each portion of beef into a patty. Then, use your thumb to press down slightly in the center of each patty creating a divot. This will help the burgers cook evenly. Set aside.
Add the cream cheese, Greek yogurt, and garlic into a food processor. Cover and pulse until well combined. (see note) Set aside.
Preheat the grill to medium heat. Cook burgers for 3-4 minutes, flip, and cook for another 3-4 minutes for medium. (You can cook them for 1-2 minutes less for medium-rare or 1-2 minutes longer for medium-well.) Remove the burgers from the grill.
To assemble, place a burger patty on a bottom hamburger bun. Spead 1/4 of the cream cheese mixture over the patty. Top with shredded cheddar cheese, jalapeno slices, 1 slice of bacon (broken in half for better coverage), and the top bun. Serve immediately.
Notes
If you don't have a food processor available, peel and finely mince the garlic clove. Then, mix together the cream cheese, Greek yogurt, and garlic until evenly combined.