Yes, you can freeze this Chicken Lasagna both unbaked and baked for several months. For unbaked, assemble the lasagna and cover the dish with a lid or cling wrap. Remove from the freezer and thaw in the fridge overnight before baking, and you may need to add ~10 minutes to the baking time. For baked, freeze after baking by covering the dish with a lid of cling wrap. Thaw in the refrigerator overnight, and then reheat in the oven by covering with foil and baking for ~15 minutes at 350F.