Heat the oil in a large saucepan over a medium heat. Add the onion and garlic, and sauté until soft and translucent. Stir in the rice and mix until coated all over with the oil.
Add a ladleful of the hot stock, stirring continuously until it’s absorbed. Repeat until all but two ladles of stock remain – this should take about 25 minutes.
Add the last 2 ladles of stock along with the peas and cooked chicken. Stir to heat through. Scatter over the goats’ cheese and basil to serve.