To make the vinaigrette, in a small bowl, whisk together all the ingredients blend until emulsified. Set aside.
Cut the goat cheese into 1-oz. rounds. Using your fingers, carefully reshape any uneven rounds. Put the pecans in a breading pan or small bowl. Roll the goat cheese rounds in the pecans, pressing lightly so they adhere, then transfer to a baking sheet. Bake until the cheese is just soft and warm, 5 to 7 minutes.
Meanwhile, in large bowl, combine the frisée, radicchio and endive. Add the vinaigrette and toss to coat the greens evenly. Divide among 8 salad bowls or plates. Using a metal spatula, transfer 1 goat cheese round to each salad and garnish with the orange segments. Serve immediately.