Mozza Restaurant Group is owned and operated by Nancy Silverton. Headquartered in Los Angeles, Mozza Restaurant Group operate ... s restaurants in LA and Newport Beach, California. MRG operates four restaurants on the corner of Highland and Melrose in Los Angeles: Pizzeria Mozza, Osteria Mozza, chi SPACCA, and Mozza2Go. Just south of LA in Orange County is Pizzeria Mozza Newport Beach. read more