1. Heat oven to 375 degrees F. Grease fluted quiche pan or 2-quart casserole. Cook bacon in medium-size skillet over medium-high heat until crisp, 5 minutes. Add green pepper; cook 2 minutes. With slotted spoon, transfer bacon and green pepper to paper toweling.
2. Bring water, half-and-half, thyme, flour, cayenne and seasoning from packaged potatoes to a boil in saucepan. Lightly beat eggs in large bowl. Gradually whisk liquid from saucepan into eggs. Stir in potatoes, scallions, tomatoes, cheese, and reserved bacon and green pepper. Pour into quiche pan.
3. Bake, covered, in 375 degree F oven 15 minutes. Uncover; bake 15 minutes or until center is set and edges begin to brown. Let stand 10 minutes. Makes 8 servings.