01 - Preheat oven to 400°F and line a large baking sheet with parchment paper.
02 - Toss potatoes with olive oil, salt, and pepper in a bowl. Spread evenly on the baking sheet and roast for 25 to 30 minutes, tossing halfway through, until golden and tender.
03 - While potatoes roast, rub chicken breasts with olive oil, smoked paprika, garlic powder, salt, and pepper.
04 - Heat a grill pan or skillet over medium-high heat. Sear chicken breasts for 5 to 6 minutes per side until fully cooked, reaching an internal temperature of 165°F. Let rest 5 minutes, then shred or dice.
05 - In a small saucepan over medium heat, whisk together BBQ sauce, honey, apple cider vinegar, and Worcestershire sauce. Stir in the shredded chicken and heat until warmed through, about 2 to 3 minutes.
06 - Transfer roasted potatoes to a large oven-safe dish. Top with honey BBQ chicken mixture, then sprinkle with shredded cheddar cheese.
07 - Return the dish to the oven for 5 to 7 minutes until the cheese melts and bubbles.
08 - Remove from oven and scatter sliced spring onions and fresh parsley over the top. Serve hot.