In a large bowl, add the spinach, cream cheese, sauteed onions, feta cheese, lemon juice, dill, salt, pepper and garlic powder. Stir everything together until it’s evenly combined.
Place the mixture into a baking dish and smooth it out until it’s flat and even.
Sprinkle the top with the shredded mozzarella cheese.
Place it in the oven until the cheese is melted and the sides are hot and bubbly.
Let it cool slightly and serve with pita chips. Enjoy!