Preheat oven to 450F. Place pancetta slices in a single layer on large-rimmed baking sheet. Sprinkle with pepper. Bake until golden, about 10 minutes. Using spatula, slide pancetta crisps onto platter. Top each with 1 teaspoon goat cheese and 1 pear slice. Sprinkle with thyme and serve.
Tip: Sprinkle fresh lemon juice on the pears to keep them from browning.