Step 1: Preheat oven and prepare ingredients (10 minutes) - Preheat your oven to 200°C (400°F). While the oven preheats, chop the chicken breast into 2.5 cm (1 inch) pieces (2 minutes). Peel and chop the potatoes, carrots, and parsnips into 2 cm (0.8 inch) cubes (5 minutes). Core and chop the apples into similar-sized pieces (2 minutes).

Step 2: Season and arrange (2 minutes) - In a large bowl, combine the chopped chicken, potatoes, carrots, parsnips, and apples. Drizzle with olive oil. Sprinkle with rosemary, thyme, garlic powder, onion powder, salt, and pepper. Toss well to ensure everything is evenly coated. Spread the mixture in a single layer on a large baking sheet.

Step 3: Roast (18 minutes) - Place the baking sheet in the preheated oven and roast for 18 minutes, flipping the ingredients halfway through, until the chicken is cooked through (internal temperature 74°C / 165°F) and the vegetables are tender and lightly caramelized. If needed, cook for an additional 2-3 minutes until desired tenderness is reached.

Step 4: Serve (0 minutes) - Carefully remove the baking sheet from the oven. Serve hot and enjoy.