Thanks Renata for your comment. We overlooked an important tip on this recipe. It has to do with resting meat.
Resting meat is very important. WE failed you on this recipe because we said to place the chicken from the pan, onto a tray, cover, then place into the oven. What we should have said is to transfer the chicken to the plate, let sit at room temperature for about five minutes (to stop the cooking process), then tent with aluminum foil with holes in it. What happend to your dish is that you (because of our instructions), placed the hot chicken onto a plate and by wrapping it in aluminum foil right away, the chicken simply continued to cook. The oven may have been on "warm", but the chicken was too hot, so the foil actually created an "oven-like" temperature. And without poking holes in the foil, the steam did not escape, so this affected your end crust (carmelization).
It is normal for liquid to escape from meat when resting though. I will add a note to this dish. Please try it again, and make sure to let the chicken sit on the counter - UNWRAPPED - for at least five minutes. You are only putting it into the over then to keep it warm for a few minutes, but it will not continue to cook. Here is a drill-down we will add to this dish.
Meat Needs to Rest After Cooking
Let us know how it goes next time. It will work. Have confidence. Sorry for the oversight on our part.
Joe