Select a ripe watermelon and wash it under cool water.
Cut the watermelon in half and scoop out the flesh into cubes.
Place the watermelon cubes in a large mixing bowl.
Crumble the feta cheese over the watermelon.
Add the chopped mint leaves to the bowl.
Drizzle balsamic glaze and olive oil over the salad.
Season with salt and pepper to taste.
Gently toss the salad to combine all ingredients.
Serve immediately or chill in the refrigerator before serving.