Tandoori chicken with flatbreads and courgette yoghurt

For the chicken:

1 whole chicken or 2kg skinless chicken portions

1 tbsp ground coriander

1 tbsp ground cumin

2 tsp turmeric powder

2 tsp chilli powder

2 tsp garam masala

2 tsp flaky sea salt

1 tsp fresh ground black pepper

1 tbsp grated fresh ginger

1 tbsp grated garlic

200g Greek yoghurt

Juice of half a lemon

For the courgette yoghurt:

1 large courgette

350g Greek yoghurt

1 tsp sugar

1 tsp salt

Juice of half a lemon

20ml olive oil

½ tsp cumin seed

½ tsp fennel seed

1 tsp mustard seed

2 dried red chillies

A few curry leaves or leaves of fresh basil

For the flatbreads:

300g plain flour

300g Greek yoghurt

1tsp salt

2tsp baking powder

20g chopped coriander