Step 1In a large saute pan, heat the olive oil over medium heat. Add the bread cubes and salt and then toast until golden, tossing frequently for even cooking, about 10 minutes.
Step 2Add the minced garlic and chile and toss to coat the bread. Continue cooking for about 2 minutes, making sure the mixture doesn't get too brown. Remove from the heat.
Step 3In a large bowl, mix together the tomatoes, onion, vinegar and black pepper. Add the bread mixture and toss to coat. Let sit for about 30 minutes for flavors to combine.
Step 4Add the oregano, basil, parsley and watercress to the salad, toss. Check for seasoning, adding more salt if desired. Serve immediately, with a drizzle of olive oil.