Place beets on a double thickness of heavy-duty foil (about 18 in. x 12 in.). Drizzle with 2 tablespoons oil. Fold foil around beets and seal tightly. Place on a baking sheet. Bake at 400° for 40-50 minutes or until tender. Cool.
Meanwhile, in a small bowl, combine egg white and pepper; add hazelnuts and toss to coat. Transfer to a 9-in. square baking pan coated with cooking spray. Bake for 10-12 minutes or until golden brown, stirring twice. Cool on a wire rack.
In a small bowl, combine the vinegar, shallot, thyme and salt. Gradually whisk in remaining oil.
Peel and thinly slice beets. Line four individual salad bowls with lettuce; top with beet and clementine slices. Sprinkle salads with fennel and hazelnuts; drizzle with dressing. Serve immediately. Yield: 4 servings.