Remove ribs from Kale and cut the leaves into very thin strips. Place in a large mixing bowl and set aside.
Bring a large pot of lightly salted water to a boil. Add quick cook barley and cook for 10 minutes. Drain and pour hot barley over kale to wilt it.
Chop the carrots, onion, yellow pepper, celery, and cucumbers into small pieces and add to the bowl. Halve the cherry tomatoes and cut the artichokes, olives, and sundried tomatoes into smaller pieces.
Add to the bowl along with the feta cheese, olive oil, vinegar, mustard, lemon zest, and juice. Use a glove to toss the salad so that everything is nicely coated with the dressing. Season with salt and pepper to taste.
SERVES 8