1. Prepare your grill for direct grilling over medium high heat 
2. Cut your watermelon into discs and coat them lightly with olive oil 
3. Place your oiled watermelon disks directly on the hot grates until there are visible grill marks underneath
4. Flip the watermelon over and top it with your crumbled feta cheese. Cover the grill and let it cook for a few more minutes. The cheese will soften but will not melt. 
5. Remove the watermelon pizza and sprinkle it with the chopped mint Slice your pizza into wedges just as you would cut a regular pizza pie 

At this point, we like to drizzle it with a little bit of balsamic glaze for an extra burst of flavor. Let your imagination run wild!