In a cold skillet, lay the bacon slices flat and turn the heat to medium. Cook until the fat has rendered and the bacon is crispy, then remove and drain on a paper towel.
Divide the ground beef into two equal portions and form them into small, flat slider patties slightly wider than the buns.
Season both sides of the beef patties with sea salt, black pepper, and garlic powder.
Wipe out the excess bacon grease from the skillet, add the avocado oil, and return to medium-high heat.
Place the patties in the hot skillet and sear for 3 minutes per side until a golden-brown crust forms.
During the last minute of cooking, cut the cheese slice into four squares, stack two on each patty, and cover the pan briefly to melt.
Split the slider buns and lightly toast them in the skillet or a toaster oven until warm.
Assemble the sliders by placing the patties on the bottom buns, topping each with a slice of crispy bacon, lettuce, and tomato before closing with the top bun.