Whisk together first 6 ingredients; set aside.
Combine cornmeal, flour, and 3/4 teaspoon salt. Dredge oysters in cornmeal mixture. Pour oil to depth of 2" into a Dutch oven; heat to 375°. Fry oysters, a few at a time, 2 minutes or until golden, turning once. Drain on paper towels. Set aside, and keep warm.
Arrange greens, green onions, pear slices, and oysters on individual plates. Drizzle dressing over salads. Serve immediately.
Note: Fry the oysters ahead; then reheat them just before serving in a 450° oven for 3 to 5 minutes or until crisp.
*Herbes de Provence is a dried herb blend consisting of herbs common to Southern France. Find the blend in tiny earthenware crocks in specialty kitchen shops. For a simple substitution use 1/2 teaspoon each crushed lavendar and rosemary leaves.