Pre heat the oven to fan assisted 160C / 180C / 350F / gas 4.
Season sweet potatoes with ½ tsp coriander, ½ tsp ginger, salt, pepper and 1 tsp oil and mix well.
Season the chicken with 1 jumbo cube (or 1 tsp ground coriander, 1 tsp ground ginger and salt).
Bake sweet potato in the oven for up to 30 mins till they are done. Make sure to stir them at least once during baking so that they cook evenly on all sides
Heat the remaining oil in a non stick pan and fry the chicken pieces on medium heat till they are done. Remove them from the pan and set them aside
In the same pan add in the onions, garlic, peppers, scotch bonnet and bay leaves and stir fry for a minute until fragrant.
Then add in the water, cover and simmer for about 40 mins till the onions are soft stirring occasionally.
Keep an eye on the water level and if it get gets too dry you might need to add in a few tbsp of water.
Then add in chopped tomatoes and the other jumbo cube, bring to the boil and then cook on low heat for another 20 mins.
Then add in the chicken and sweet potato and simmer uncovered for another 10 mins so the flavours blend together.
Adjust seasoning and serve.
You can substitute the scotch bonnet with chillies of you choice.
Jumbo cubes (and maggi cubes) are stock cubes used to flavour food in West Africa. You normally find them in shops selling ethnic food. If you can't find one then replace the water with stock of your choice.