Chakalaka Butter Chicken with Roast Tomatoes

Name: Chakalaka Butter Chicken with Roast Tomatoes
Ingredients: 250 g cherry tomatoes; 1 red onion, quartered OR cut into slivers; 4-6 skinless chicken breast fillets; salt and freshly ground pepper; handful of fresh coriander; 125 g soft butter; squeeze of lemon juice; 10 ml curry powder; 2,5 ml turmeric; 4 garlic cloves; 5 ml dried thyme; pinch of salt; salt and freshly ground pepper; 15 ml olive oil; 2 red chillies; 15 ml olive oil