Preheat oven to 350 degrees. Line a sheet pan with parchment paper and set aside.
Using a kitchen spoon or your hands, combine turkey, Worcestershire sauce, onion, mushrooms, garlic, mayonnaise, chili powder, black pepper, and sea salt in a large bowl until well mixed. Cover and place in fridge for at least 30 minutes.
Meanwhile, slice the King's Hawaiian rolls in half horizontally then place on prepared sheet pan. Brush with melted butter and bake for about 12 minutes or until golden brown.
While rolls toast, cut lettuce into pieces that will fit on each slider.
Place grill pan on stove top over medium heat and spray with oil. Cut pineapple rings into halves and sprinkle each piece with ground ginger then place on heated grill pan and cook for about three minutes each side.
Add more oil to pan then remove ground turkey mixture from fridge and form into 16 patties, about 2 ½ inches across and two inches thick.
Place a few patties on pan and cook for about four minutes then flip and gently press to flatten to about one inch thickness. Continue cooking for about five minutes or until a meat thermometer reads 165 degree Farenheit. Repeat until all patties are cooked.
Assemble each slider starting with bottom bun, lettuce, patty, pineapple, then top bun.