Paprika chicken with vegetables

1 medium chicken

1 butternut squash, peeled and cut into chunks

4 large carrots, peeled and cut into chunks

2 parsnips, peeled and cut into chunks

2 medium onions, peeled and cut into chunks

1 punnet cherry tomatoes, halved

2 large peppers, cut into chunks

7/8 medium potatoes, peeled and cut into chunks

For the seasoning:

1 tbsp paprika

1 tsp salt

1 tsp white pepper

1 tsp garlic powder

3 tbsp olive oil (yes I know this sounds a lot but it has to go a long way!)