Heat oven to 375°F. Place pie crust in 9-inch glass pie plate or quiche pan as directed on box for One-Crust Filled Pie.
Sprinkle feta cheese evenly in crust. Sprinkle onion and ham over cheese; top with spinach and bell pepper.
In small bowl with whisk or in blender, beat eggs, half-and-half, garlic and pepper. Pour over ingredients in pie plate. Sprinkle with mozzarella cheese.
Bake 35 to 40 minutes or until set and knife inserted in center comes out clean. Let stand 10 minutes before serving.