Heat 2 TBS oil in a 10" non-stick skillet until shimmering. Add shallot, ginger, cumin and fennel. Cook until fragrant, about 15 seconds. Stir in tomatoes and 1/4 tsp salt and cook stirring frquently until tomatoes have softened about 3-5 minutes.
Remove from heat and add vinegar, sugar and remaining 2 TBS oil just before serving. Serve over poached chicken