In a large mixing bowl, combine the shredded rotisserie chicken with the sweet and tangy BBQ sauce, ensuring every piece of chicken is well coated. Transfer the mixture to a skillet and warm over medium heat for about 5-7 minutes, stirring occasionally.
While the chicken heats up, prepare the slaw by mixing the shredded cabbage, Greek yogurt, white vinegar, and a sprinkle of salt and pepper in another bowl. Toss until everything is evenly coated.
Lightly grill or toast the slider buns until they are golden and crispy.
To build the sliders, place a generous scoop of the BBQ chicken on the bottom half of each bun. Add a pineapple ring on top, followed by a spoonful of the cabbage slaw. If you like, garnish with fresh parsley for an extra touch.
Cap each slider with the top half of the bun and enjoy them warm.