Season the fish fillets with some salt and pepper, then bread them with flour on both sides.
Preheat a frying pan, add the (olive) oil and fry the fish fillets over a medium heat until golden, approximately 10-15 minutes, depending on the size of the fillets.
In another frying pan, add ¼ cup of oil and start frying the sliced onion. After approximately a minute, add the strips of yellow chili, crushed garlic, yellow chili powder, panca chili powder, salt, pepper and cumin and mix well as you continue to fry. After a few more minutes, add the red vinegar and finally some oregano. Turn off the heat.
Place a few lettuce leaves on a plate, add the fish fillets and douse with a generous portion of the onion sauce. Place the accompaniments of a piece of corn cob and slices of sweet potato and decorate with a couple of egg slices and olives. Serve with rice, if desired.
Enjoy and hope there will be some left for tomorrow!