Grilled Watermelon Pizza

Bahan-bahan (6 porsi)

• 1 thick slice watermelon ((1½-inches thick))
• 2 tablespoons olive oil
• kosher salt and freshly ground black pepper
• 2 cups baby arugula
• 1 cup blueberries
• 1 cup halved cherry tomatoes
• ½ cup shaved Parmesan cheese