Skinny Smothered Chicken

I found this recipe a few years ago but my family wasn't very keen on it. I decided to make a few changes. The changes were a success! My hubby loved it this time around!

1 pound of boneless, skinless chicken (beat with meat mallet until even thickness is acheived)
1 green pepper, thinly sliced
8 oz mushrooms, thinly sliced
1/2 yellow onion thinly sliced
1/4 teaspoon garlic powder
1/2 teaspoon oregano
salt and pepper to taste
1 tablespoon Dijon mustard
1/2 cup shredded cheese
1 teaspoon of olive oil

Heat olive oil in pan. Once hot, saute veggies until crisp tender. add garlic and oregano. remove from pan and set aside. add chicken to pan and brown until nearly cooked through. put veggies on top of chicken, top with cheese and cover with lid. After 2 minutes remove from heat but keep the lid on. Let rest for 5 minutes with lid on before serving. Enjoy!