In a cup, mix the oil and vinegar with a fork to combine.
Divide the salad leaves between 4 plates.
Sprinkle the lettuce with feta cheese. Add chopped tomato and cucumber to the lettuce. Drizzle the dressing over the lettuce and toss with your hands to coat everything with the dressing.
Top the salad with the roasted peppers, chopped eggs and chopped chicken.