Preheat a grill or grill pan over medium heat.
In a small bowl, whisk together the chopped red onion, Peppadew peppers, sherry vinegar, honey, and 2 tablespoons olive oil until well combined.
Brush both sides of the eggplant and halloumi with the remaining olive oil.
Season the eggplant with salt and pepper.
Grill the eggplant for 5–6 minutes per side until tender with deep grill marks.
Grill the halloumi for 1–3 minutes per side until golden and lightly charred.
In a large serving bowl, toss the arugula, lentils, and mint with about three tablespoons of the dressing.
Arrange the grilled eggplant and halloumi over the salad.
Sprinkle with smoked almonds.
Finish by drizzling the remaining dressing over the Halloumi and Eggplant Salad before serving.