Preheat oven to 450°F. Combine tomatoes, 2 tablespoons oil, and herbes de Provence in a large bowl. Season with salt and pepper; toss to coat. Heat 1 tablespoon oil in a large heavy ovenproof skillet until oil shimmers. Carefully add tomatoes to pan (oil may spatter). Transfer skillet to oven and roast, turning once, until tomatoes burst and give up some of their juices, about 15 minutes. Transfer to a medium bowl and drizzle with Worcestershire sauce.