In a small bowl whisk together the zest, lime juice, honey, olive oil, salt & pepper. Set aside.
Grill the fruit and cheese
Heat a grill pan over medium-high heat. Slice the watermelon into thick "steaks" or slabs to grill and slice the cheese into manageable pieces about 1/4 -1/2 inch thick. When the pan is heated brush it with olive oil then grill the melon and the cheese for 1-1.5 minutes per side until grill marks appear.
Remove from the heat and allow to cool. The watermelon will release juices as it rests, discard them.
Dice the watermelon and halloumi into small pieces then toss with the prepared dressing and top with mint.
