Gather all your ingredients and wash them thoroughly.
Dice the cucumber and bell peppers into small, uniform pieces.
Halve the cherry tomatoes and set them aside.
Chop the red onion finely.
Shred the purple cabbage into thin strips.
Chop the lettuce into bite-sized pieces.
In a large bowl, combine all the chopped vegetables.
In a separate bowl, whisk together the olive oil, lemon juice, salt, and pepper.
Pour the dressing over the salad and toss gently to combine.
Garnish with fresh parsley before serving.