Steps
1. Preheat grill to medium-high heat.
2. Brush both sides of the watermelon slice with olive oil.
3. Season with salt and pepper.
4. Grill the watermelon for 2-3 minutes on each side until grill marks appear.
5. Remove from grill and let it rest for a minute.
6. Garnish with fresh mint leaves.
7. Serve and enjoy!