Rotisserie Chicken Leftovers?

So I got a rotisserie chicken the night before last, to make Mom's famous Chicken Tetrazzini. It was a hit. But I had 1/2 a leftover chicken. What to do?

Chicken Black Bean Enchiladas
1/2 a leftover chicken (about 2-1/2 cups)
1 15 oz can black beans (you could also use red beans or pintos...)
2 cups shredded cheese of your choice (cheddar, pepper jack, lowfat...)
1 medium onion
1 15 oz can tomato sauce
~15 oz chicken broth (low sodium or lowfat is fine)
3 TBSP sour cream (nonfat or lowfat is fine)
10-12 corn tortillas (I used extra thin ones, which were great)
small can hatch sliced jalapeños or chiles (optional)
garlic powder
cumin
salt & pepper

In a medium sized bowl, combine the chicken, that you've broken up (shredded) into smallish pieces, the can of black beans, that you've strained/rinsed and 1 cup of cheese. Set aside.

Chop up your onion. In a saucepan (12" size or so) sauté the onions in a little olive oil until golden (I got a little char on them and they were great). Add the tomato sauce, some cumin and garlic powder, salt and pepper. I also added some juice from a can of jalepenos for some zing. You could chop up the jalapeños and add them, or add some chopped chiles depending on the heat you want. Cook down the sauce until it's thinner than tomato paste, but still very thick, stirring frequently. Once it's thickened, add the chicken broth and bring back up to a simmer. Take off the heat and stir in the sour cream.

Stir in 3/4 cup of the sauce to the chicken/bean mixture.

Heat your corn tortillas in the microwave (in a bag is good, to steam them) for about 35 sec-until just warm and pliable.

Put about 3/4 cup of sauce in the bottom of a baking dish (about 11"x7" or 13"x9"- I used what I had on hand which was an oval about 12" long and 6" wide or so). Put 1/4-1/2 cup of the chicken/bean mixture in a tortilla and wrap it over, placing it in the baking dish, seam side down. Continue for all your tortillas, or until your pan is full.

Pour the rest of the sauce over the top, then sprinkle the rest of your cheese on top.
Bake at 375 for 20 minutes.

You can serve it with sour cream, chopped cilantro, sliced or chopped onions.