Rinse scallops. Combine scallops, lemon juice and parsley in a glass bowl. Cover; marinate in refrigerator while preparing sauce.
Heat oil and 1 tablespoon butter in large skillet over medium-high heat. Add onion and garlic; cook and stir until onion is tender. Add tomatoes with juice, basil, oregano and thyme. Reduce heat to low. Cover and simmer 30 minutes, stirring occasionally.
Drain scallops; discard marinade. Heat remaining 1 Tbsp. of butter in a separate large skillet over medium heat. Add scallops; cook and stir about 2 minutes or until scallops are opaque. Stir in cream, nutmeg and tomato sauce mixture. Pour sauce over cooked vermicelli in large serving bowl; toss gently to coat. Garnish as desired.