Heat the grill to medium. Toss the halloumi with the smoked paprika, salt and pepper. Spread on a foiled baking sheet and put under the grill for 5 minutes then flip and grill for 5 minutes on the other side. Whisk together the honey, vinegar and mustard, brush onto the halloumi and grill for another 2 minutes.
Put the lettuce, radishes, cherry tomatoes, red onion and halloumi in a bowl and toss together. Whisk together all of the dressing ingredients apart from the olive oil. Stream in the olive oil while whisking. Drizzle the dressing over the salad, toss and serve.
Notes
Nutrition information is an estimate and will vary depending on the exact ingredients used.