Start by washing your greens and slicing the cucumbers, radishes, and avocado. Chop the herbs and finely dice the shallot for the vinaigrette. Keeping everything prepped makes assembly quick and easy.
Whisk together champagne vinegar, lemon juice, honey, olive oil, and the finely chopped shallot. Add tahini or mustard if you like a creamier dressing. Season with salt and pepper to taste.
Slice the halloumi into ½-inch pieces. Pan-fry or roast in a lightly oiled skillet until golden brown and crispy on both sides. The outside should be crunchy while the inside stays soft and chewy.
In a large bowl, combine the greens, cucumbers, radishes, avocado, and herbs. Drizzle with the vinaigrette and toss gently. Top with the crispy halloumi just before serving to keep it crunchy.