Using a large mixing bowl, add the watermelon balls or chunks, strawberries (if using), olives or pickled red onions, and feta. Drizzle on the olive oil and freshly squeezed lemon juice and toss together gently. Sprinkle on just a pinch of salt if desired.
Arrange the zucchini slices on a platter and top with the watermelon and strawberry mixture. Garnish with the mint leaves and just a touch of dill for fun. Drizzle with a touch more olive oil and give another very light squeeze of lemon (if desired) and serve immediately.
Notes
*Olives might seem like an odd addition here but it's the sweet and salty combination that works! If you don't want to add, you can simply omit the olives.Quick Pickled Red Onions recipe, click here.