Easy Chicken without fish kiwi soup vinaigrette

1 medium onion , coarsely chopped 1 (9 ounce) package sliced mushrooms 1 teaspoon oil 1 (14 1/2 ounce) can chicken broth 3 tablespoons white wine thyme[...]

1 lb chicken piece 2 tablespoons olive oil 1 onion , peeled and sliced 2 garlic cloves , peeled and chopped 2 yellow peppers, cubed 6 plum tomatoes ,[...]