Put oven rack in middle postion; heat oven to 400*F. Sprinkle chicken evenly with salt and pepper. Heat oil in a 12" skillet over medium high heat until almost smoking. Add the chicken breasts skin side down and cook without moving them until skin is crisp and well browned, 5-8 minutes. Using your tongs, turn chicken pieces and brown on other side, about 5 more minutes. Place browned chicken side up on baking sheet and set aside.
Pour off all but 2 tbls. fat from pan. Add the mushrooms and cook over medium high heat until mushrooms start to brown, 6-8 minutes. Reduce heat to medium and add green onions; cook until softened, about 1 minute longer.
Remove the pan from the heat and add apple juice concentratte; let stand until juice warms slightly, about 1 minute. (If using brandy or cognac, wave a lit long match over skillet until brandy ignites.Return pan to medium high heat and shake skillet until flames subside). Add wine; and using a wooden spoon, scrape brown bits from the pan bottom. Simmer briskly until reduced to glaze, about 3 minutes.
Add broth and tomatoes and simmer over medium high heat; simmer briskly until liquid, mushrooms, and tomatoes measure 1 1/2 cups, about 25 minutes.
While the sauce is simmering, place the chicken in the oven; roast 15 to 20 minutes. Transfer chicken pieces to serving platter and tent with foil.
When the sauce is nicely reduced, whisk iin butter, one piece at a time, until melted and incorporated. Add the parsley and tarragon and adjust seasoning with salt and pepper. Spoon sauce over chicken and serve immediately. Enjoy!