Preheat a griddle or barbecue over medium-high heat.
Season the watermelon with a pinch of salt and pepper. Season the diced halloumi with a pinch of cracked black pepper.
Thread the watermelon and halloumi onto the skewers, starting with watermelon, and ending with watermelon, It should make 8 skewers
Drizzle the skewers with olive oil, and place them on the griddle or barbecue. Cook for 3-4 minutes until the skewers begin to brown, then turn. Repeat for all four sides, then remove.
While the halloumi and watermelon skewers are cooking, make the hot honey drizzle by combining the honey and cayenne pepper. Transfer to a bottle.
To serve, plate the skewers and drizzle with hot honey. Garnish with fresh mint leaves.