Wash the tomatoes and cut into slices. Wash the lettuce and cut into strips. Prepare the avocado, cut into thin slices and sprinkle with 1 tablespoon Lemondor lemon juice to prevent it turning black. Put the diced vegetables into in a large cup. Cut the chicken into very thin strips and toss with a little white flour. Add a little olive oil to a pan and when it is hot place the strips and brown on both sides (about 2 minutes per side). Season with salt and pepper. Add 3 tablespoons of Lemondor lemon juice diluted with a 1/3 glass of water. Cook for about 10 minutes over a moderate heat.
Add the chicken to the vegetables and then sprinkle with black pepper.