Wash all vegetables thoroughly under cool running water. Pat dry with paper towels or use a salad spinner to remove excess moisture.
Chop the mixed greens into bite-sized pieces, approximately ½-inch to 1-inch in size.
Prepare all other vegetables: halve the cherry tomatoes, dice the cucumber and bell pepper, and thinly slice the red onion. Aim for uniform pieces for the best chopped salad experience.
In a large bowl, combine the mixed greens, cherry tomatoes, cucumber, red onion, bell pepper, and olives.
Add the crumbled feta cheese and any optional ingredients you're using.
Season with salt and freshly ground black pepper to taste, keeping in mind that the feta and olives already contribute saltiness.
Gently toss all ingredients to distribute them evenly throughout the salad.
Just before serving, drizzle with your preferred dressing and toss lightly to coat all ingredients.
Serve immediately for maximum freshness and crunch.
