Heat a drizzle of oil in a large pot over medium heat. Add the chicken thighs and cook for a few minutes on each side until browned. Remove and set aside.
In the same pot, add leek, carrot, and celery, and cook for 5–7 minutes until softened. Then add a splash of the broth to deglaze, scraping up the golden bits at the bottom.
Stir through garlic, turmeric, ginger and thyme. Cook for another minute until fragrant.
Add the pasta, pour in the remaining broth and water, then return the chicken to the pot. If using fresh corn, add it here too.
Bring to a gentle boil, then reduce heat and simmer for 20–25 minutes, or until chicken is tender and pasta is cooked through. Stir in frozen corn or chopped chilli in the last 5 minutes if using.
Season to taste and serve warm.