Wash and dry lettuce or spinach, as well as berries. Place lettuce into bowls, top with berries, sliced avocado, feta cheese, and nuts.
In a small mason jar or other container, mix together olive oil, lemon juice, optional lemon zest, honey, Dijon mustard, salt, and poppyseeds. Mix again just before using each time. Drizzle dressing over salad just before serving.
Notes
You can make the dressing and candied nuts ahead of time to save time later!