Heat a medium skillet over medium heat. Score the skin of the duck breasts and season them lightly with salt and pepper. Add 1/2 tablespoon of the olive oil to the skillet and put in the duck breasts, skin side down. Cook slowly, rendering the fat, until the duck skin is golden and crisp, about 5 to 6 minutes. Turn the duck breasts over and cook them in the duck fat for 2 minutes. Remove the duck breasts from the pan to a plate, cover them with foil, and let them rest for 5 minutes.
After the duck has rested, return them to the skillet, skin side down, over medium heat. Spoon the duck fat over the breasts until they are just heated through. The skin should be crispy and duck meat should be pink in color. Transfer to a cutting board.
In another medium skillet over medium-high heat, add the remaining 1 tablespoon olive oil. When the oil is hot, add the pancetta and cook until it begins to color, about 5 minutes. Add the shallot and garlic and cook until they are soft, about 5 minutes. Lower the heat to medium and add in the spinach and the frisee. Season with salt and pepper, to taste, then add the hazelnuts and toss the greens gently to coat them with the oil. Cook the greens until just wilted, about 2 minutes.
To serve, divide the greens onto 2 plates and garnish with the chives. Slice the duck breasts and fan them over the greens. Spoon the Razz Cherry Garlic Glaze across the duck and garnish with chervil.
Razz Cherry Garlic Glaze:
Combine the red wine, grenadine, vinegar, and sugar in a saucepan over high heat and bring it to a boil. Peel and slice the garlic as thinly as possible. Add the garlic and razz cherries to the pan and reduce the heat to medium. Continue to cook until the sauce is reduced and syrupy, about 15 minutes.