I'm always looking for ways to use up leftovers...especially chicken. There's a great book called The Dinner Doctor that has some good ideas for quick meals, made with stuff you might have around the house. The following is a recipe I adapted from the book, that I like to use for that purpose. It's really tasty and easy as pie:
MOCK CASSOULET:
Olive oil
1 pound kielbasa, cut in 1-inch pieces
2 cups diced cooked chicken
1 medium onion, choppped
2 cloves garlic, minced
2 cans great northern beans
2 cans diced tomatoes
1 tablespoon dry red wine
Thyme and Oregano to taste (about 1 teaspoon each)
Cook the onion, garlic, and sausage until sausage is browned. Add chicken, beans & tomatoes with their liquid, wine, thyme, and oregano. Simmer until heated through and thickened.