Put the chicken, plain flour, curry powder, chilli flakes and sea salt into the slow cooker and mix well until coated.
Add the tomato puree, ground almonds and coconut milk. Stir well (make sure there are no pockets of flour left) put the lid on and cook on HIGH for 3 hours or LOW for 5-6 hours.
When the chicken is tender and the sauce is thickened, stir in the mango chutney, garam masala and serve. Sprinkle over the almonds if using.
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