Wash all fresh produce thoroughly under cold water.
Chop the Romaine lettuce into bite-sized pieces and place in a large mixing bowl.
Dice the cucumber and add it to the bowl with the lettuce.
Chop the bell peppers into small pieces and add to the mix.
Dice the tomatoes and include them in the bowl.
Finely chop the red onion and add it to the salad.
Slice the Kalamata olives and mix them in with the other ingredients.
Sprinkle the crumbled feta cheese over the salad.
Chop the fresh parsley and add it for a burst of flavor.
In a small bowl, whisk together olive oil, red wine vinegar, salt, and pepper, then drizzle over the salad.
Toss the salad gently to combine all ingredients and dressing evenly.