"Waldorf"-Style Chicken Salad

For 2 people (easily doubled or tripled or whatevered):

2 cups diced cooked chicken
1 large apple, cored and diced
dash lemon juice
1 large stalk celery, diced
1/4 cup walnut pieces
3/4 cup yogurt (preferably Greek)

Toss apple pieces with lemon juice to prevent browning. Add remaining ingredients and mix.

Serve as is, in pita pockets, on bread, however you like. Wonderful (and easy) for supper on a hot summer day!