Cut the chicken into chunks or strips and season with the oregano, salt and pepper.
In a large pan or skillet, heat the olive oil on a medium heat. Add the chicken and cook for 6-8 minutes until cooked through.
Remove the chicken pieces and set aside.
Add the garlic to the pan and cook for 2 minutes. Add more olive oil if required.
Add the onion and cook for 5 minutes until soft.
Add the zucchini and peppers to the pan and cook for a further 5 minutes. Stir occasionally to ensure even cooking.
Add the cauliflower rice to the pan and cook for 5 minutes until the cauliflower has softened.
Add the chicken pieces to the pan and mix into the cauliflower vegetable rice.
Serve with fresh basil sprinkled over the cauliflower rice.