In a large bowl, combine the shredded chicken and BBQ sauce, mixing well until the chicken is thoroughly coated.
Add the diced red onion, jalapeños, and shredded cheddar cheese to the BBQ chicken mixture. Stir everything together until evenly incorporated. Season with salt and pepper to taste.
Preheat a large skillet over medium heat and add the olive oil.
Once the skillet is hot, add the BBQ chicken mixture to the skillet. Cook for about 5-7 minutes, stirring occasionally, until heated through and the cheese is melted.
While the chicken mixture is cooking, split the mini slider buns in half and lightly toast them on a separate skillet or in a toaster oven until golden brown.
Spoon a generous amount of the BBQ chicken mixture onto the bottom half of each slider bun.
Top with the other half of the bun, press down gently, and garnish each slider with fresh cilantro.
Serve immediately and enjoy these flavorful sliders at your next gathering!