1 pound pork tenderloin, trimmed and cut into thin strips
1/4 teaspoon salt
1/8 teaspoon freshly ground black pepper
2 teaspoons olive oil
1 1/2 cups thinly sliced onion
1 small jalapeño pepper, seeded and chopped
1/2 cup fat-free, less-sodium chicken broth
1/2 cup chopped plum tomato
3 tablespoons chopped cilantro
2 1/2 tablespoons fresh lime juice
8 (6-inch) flour tortillas