2 tablespoons olive oil, divided
4 boneless pork loin chops, pounded thin
1 large onion, sliced
1/2 teaspoon sugar
2 teaspoons chili powder
1/2 teaspoon fennel seeds, crushed
1/2 teaspoon red pepper flakes
1 teaspoon dried oregano
1 (8 ounce) can tomato sauce
2 fluid ounces water
1 teaspoon Worcestershire sauce
salt and pepper to taste