Season breasts with salt on both sides. Dredge breasts in the rub, skin side down only, tapping off any excess. Heat oil in a large saute pan over high heat. Cook the squab, rub-side down, in the pan until golden brown, about 2 to 3 minutes. Turn over and cook for 2 to 3 minutes for medium doneness. Divide the white chicory among 4 plates. Slice the squab on the bias into 4 slices and arrange on top of the chicory. Sprinkle with the goat cheese. Ladle the Wild Mushroom Vinaigrette lightly over the greens and squab and around the plate. Garnish with chopped chives.
Combine all ingredients in a bowl. Will keep stored in an airtight container for 6 months.
Heat 3 tablespoons olive oil in a large saute pan over high heat. Add the mushrooms, season with salt and pepper, and cook until golden brown. Whisk together the vinegar, shallot and mustard in a medium bowl. Slowly whisk in the olive oil and whisk until emulsified, whisk in the truffle oil and season with salt and pepper, to taste. Fold in the mushrooms and set aside.