Whisk white wine vinegar with salt and pepper, add oil, mustard and honey. Peel onion, dice finely and stir into the vinaigrette.
Clean, wash and chop the peppers. Wash and dice the tomatoes. Halve melon, scrape out seeds with a tablespoon. Cut the melon into slices, cut the flesh from the skin and dice finely.
Chop the almonds coarsely. Dice the cheese. Wash parsley and shake dry, pluck off the leaves and chop finely. Mix the prepared salad ingredients with the vinaigrette and serve.