3 barbecue chicken sliders with pickled onions Recipes

sliced red onion, sherry vinegar, divided, honey, divided, water, dijon mustard, freshly ground black pepper, divided, butter, skinless, boneless chicken thighs, trimmed, salt, pull-apart dinner rolls (such as sara lee)

no-salt-added ketchup, dark brown sugar, cider vinegar, chili powder, garlic powder, onion powder, dry mustard, smoked paprika, ground cumin, ground allspice, shredded skinless, boneless rotisserie chicken breast, sliders mini buns (such as pepperidge farm), bread -and-butter pickle chips