Skin and de-seed the tomato. The easiest way to do this is to to make a cross in the skin at the bottom and then plop it in a bowl of boiling water for 3-4 minutes, turning it over every now and again. Pour away the water and when it's cool enough, peel off the skin. Quarter the tomatoes, squish out the seeds and then dice the flesh.

Get a large frying pan on a medium heat with some olive oil. Once the oil is hot, add the chicken and fry it for 5 minutes or so, until golden. Remove from the pan and set aside.

Add the rice to the pan that was used for the chicken (add more oil if needed) and fry for 3-4 minutes, stirring continuously, until the rice turns translucent. Remove form the pan and set aside with the chicken.

Add the sliced chorizo to the pan and fry for 2-3 minutes until it starts to release it's oil. Then add the onion, celery, peppers, garlic and tomato. Fry for a further 3-4 minutes until the vegetables are beginning to soften.