In medium saucepan, cook potatoes in 2 inches simmering water, covered, 25 to 30 minutes or until tender. Drain and cool; cut in half. With melon baller, scoop out the center from each half to form a cup.
In small bowl, fold together crabmeat, yogurt, mayonnaise, chives, cheese, parsley and lemon juice. Season with salt and pepper. Spoon about 1 teaspoon crab mixture into each potato half.
Broil 4 inches below heating element of broiler 3 to 5 minutes or until golden.