Chicken hotpot with golden potatoes

Ingredients

• Light cooking spray oil
• 500g skinless, boneless chicken thighs, cut into three equal-sized pieces
• 1 medium onion, diced
• 4 medium carrots, diced
• 1⁄2 medium swede, diced
• 200g button mushrooms, cleaned
• Small handful fresh thyme (leaves only) or 1⁄2 teaspoon dried thyme
• 1 teaspoon smoked paprika
• Freshly ground black pepper, to taste
• 1 tablespoon plain wholemeal flour
• 500ml reduced-salt chicken stock, hot
• 500g roasting potatoes, thinly sliced