In a bowl, combine the chicken tenders with the buttermilk. Cover and let it marinate in the refrigerator for at least 1 hour (or up to overnight for more flavor).
In another bowl, mix together the flour, garlic powder, onion powder, smoked paprika, cayenne pepper, salt, and pepper.
Preheat your oven to 400°F (200°C). Remove the chicken tenders from the buttermilk, allowing excess liquid to drip off. Dredge each tender in the flour mixture until fully coated, then place them on a baking sheet.
Bake the coated chicken tenders for 20-25 minutes, flipping halfway through, until they are golden brown and crispy.
Once cooked, remove the chicken from the oven and let it cool for a minute. In a large bowl, toss the crispy chicken tenders in buffalo sauce until well coated.
Slice the slider buns in half. On the bottom half of each bun, place a few pieces of buffalo chicken. Top with shredded lettuce, crumbled blue cheese, and a drizzle of ranch dressing.
Place the top half of the slider bun over the fillings. Optionally, add sliced pickles for an extra crunch.
Cut each slider in half for easier handling and serve warm.
Notes
Marinating the chicken overnight enhances the flavor.