Add olive oil to shallow pan and place on moderate heat.

Place whole mushrooms into hot pan and cook until softened

Add chicken fillets. Cook for 5 minutes or until fillets to seal the meat.

Add baby peppers and continue to cook for a further 5 minutes

Slice the tomatoes and save 8 slices for serving. Chop the remainder and add to the chicken, along with the fish sauce.

Place the spinach on top of the pan and allow to wilt - 2-3 minutes.

Place 4 slices of tomato on each plate

Gently stir in the spinach and pour the salad onto the plates, over the tomatoes.