Preheat oven to 400 degrees F.
Unfold sheet of puff pastry onto a lightly floured surface.
Spread softened cream cheese evenly over pastry sheet leaving about ½ inch space along the edges.
Evenly distribute the drained and thawed frozen spinach over ½ of the puff pastry sheet (width wise), again leaving about a ½ inch space along the edges.
Next, evenly distribute chicken and green onions over the spinach, still saving that ½ inch space around the edges.
Lastly, evenly sprinkle crumbled feta and shredded mozarella cheese over the top of the chicken, still leaving a ½ inch space around edges.
Fold over the half of the puff pastry that doesn't have the ingredients on it and seal edges nicely and tight.
Place on a greased cookie sheet and bake at 400 degrees F for 15-20 minute or until top is nice and golden brown. (NOTE: You could lightly brush some beaten egg over the top of the dough prior to baking for a nicer and crisper golden top)
Cut into slices and enjoy!
