Whisk the dressing ingredients together until smooth and bright.
Add the mixed greens to a large bowl and lightly toss with the lemon olive oil dressing until evenly coated.
Spread the dressed greens onto a large serving platter or shallow bowl. Arrange the avocado slices, grilled chicken, cherry tomatoes, and prunes throughout the salad.
Place the burrata right on top of the salad. Finish with fresh lemon zest, flaky salt, cracked black pepper, and a generous drizzle of olive oil.
Serve immediately with warm bread, grilled vegetables, or on its own.
Notes
Let the burrata come to room temperature before serving. Grill the chicken ahead of time. Add the dressing right before serving so the greens stay crisp.