Salads with capers

6 tablespoons olive oil 3 tablespoons red wine vinegar 1 small garlic clove , minced 2 ounces fresh chives , chopped to yield 1/4 cup 9 ounces bocconcini[...]

2 x Idaho baking potatoes , like russets peeled, sliced     into 12 pcs about 1/2"-thk, and     punched out with round cookie cutter 3 sm purple baking[...]

4 cooked skinless chicken breasts 10 ounces mixed salad greens (a pillow pack, which is about 300g) 8 teaspoons capers , drained 1 medium red onion , sweet[...]