1 pound orecchiette pasta
1/4 cup plain bread crumbs
1/4 cup chopped fresh flat-leaf parsley
2 large eggs, lightly beaten
1 tablespoon whole milk
1 tablespoon ketchup
3/4 cup grated Romano
3/4 teaspoon salt
3/4 teaspoon freshly ground black pepper
1 pound ground chicken
1/4 cup olive oil
1 1/2 cups low-sodium chicken stock, hot
4 cups cherry tomatoes, halved
1/2 cup freshly grated Parmesan
8 ounces bocconcini mozzarella, halved
1/2 cup chopped fresh basil leaves