Preheat oven to 180c (350f).
In a large, heavy-based pot heat the olive oil and fry chorizo then remove with a slotted spoon and transfer to a plate.
1 tablespoon olive oil, 125 g chorizo sausage
Add chicken and fry until lightly browned (see my notes), then remove to a plate.
500 g chicken thighs (boneless and skinless)
Add onion and cook over medium heat until starting to soften.
1 small brown onion
Stir in the rice and toast for 1-2 minutes, then add garlic and cook for a further 30 seconds.
300 g risotto rice, 3 garlic cloves
Add white wine to deglaze, scraping up any flavour spots and simmer until mostly evaporated.
⅓ cup dry white wine
Pour in hot chicken stock, add back in chicken, chorizo and thyme leaves and bring to a simmer.
5 cups chicken stock, 2 teaspoon fresh thyme leaves
Once simmering, cover with a tight-fitting lid and bake for 30 mins.
Stir through butter and parmesan, taste for seasoning and serve immediately.
⅓ cup freshly grated parmesan cheese, fine salt, 1 tablespoon salted butter