Chicken Soup with mushroom

2 tablespoons olive oil 2 boneless skinless chicken breasts , cut into thin strips 2 cups thinly sliced portabella mushrooms (stems removed) 1 medium onion ,[...]

1 lb boneless skinless chicken breast , chopped 1 large onion , minced 3 garlic cloves , minced 1 red bell pepper , chopped 1 orange bell pepper , chopped 1[...]