Beat eggs in a bowl, add the salami pieces and season with the herbs and spices.
Heat oil in a pan and add the mixture. Place on high heat for 2 minutes and then cook on low flame covered for another 2-3 minutes. This makes the omelette fluffy and light.
To assemble the sandwich, halve the bun, arrange the vegetables, place the cheese slice and then place the omelette cut into small pieces. Add a dash of tomato chilli sauce to finish.