Meanwhile, cook the bacon in a large nonstick skillet over medium heat for 3 minutes. Add the onion and garlic; cook, stirring occasionally, for 5 minutes or until slightly softened. Add the chopped zucchini, basil, rosemary, thyme and red-pepper flakes; cook, stirring occasionally, for about 7 minutes. Remove the skillet from the heat. Mix in the bread, half of the cheese, the salt and pepper.