Orecchiette Pasta Salad With Artichokes and Grilled Veggies

2 tablespoons olive oil

1 large onion s

1 red pepper s

1 medium zucchini

1/2 cup mushroom s

2 minced garlic clove

1 1/2 cups salad dressing (see note below)

1 tablespoon finely chopped caper s

3 tablespoons finely chopped flat leaf parsley

1 teaspoon red chili pepper flakes

1 teaspoon fresh ground black pepper

6 canned artichoke heart (not marinated)

1/2 cup sliced black olive s

1 cup shredded cheese (see note below)

1/4 cup additional salad dressing

6-8 quartered cherry tomatoes