Finely dice the jalapeño, removing the seeds and membranes if you prefer a milder heat, and grate the sharp cheddar cheese.
In a small mixing bowl, combine the ground turkey with sea salt, black pepper, and garlic powder until well incorporated.
Divide the turkey mixture into two equal portions and form them into small slider-sized patties.
Press a small well into the center of each patty, fill with the diced jalapeño and grated cheddar, then fold the meat over to seal the filling inside.
Wrap one slice of center-cut bacon tightly around each patty, securing the ends with a toothpick if necessary.
Heat the avocado oil in a cast-iron skillet over medium heat until shimmering.
Place the sliders in the skillet and sear for 5-6 minutes per side, ensuring the bacon becomes crispy and the turkey reaches an internal temperature of 165°F.
While the sliders rest for a minute, lightly toast the whole grain slider bun in the same pan to soak up the savory flavors.
Place the bacon-wrapped patties onto the toasted bun and serve immediately.