Mix together the brown sugar, pineapple, sambal and a nice pinch of salt in a small bowl. Set aside.
Line a baking sheet with parchment paper and lay the bacon strips on top; sprinkle with pepper. Bake until most of the fat is rendered, 8 to 10 minutes. Use paper towels to blot as much excess fat as possible.
Put a wire rack on a baking sheet and lay the bacon on top. Brush the glaze over the bacon. Bake until the pineapple bits are golden brown and the bacon is crisp, 2 to 3 minutes. Let cool for a few minutes before serving.