Step 1: Prepare the Pita Chips : Preheat oven to 400°F (200°C). Cut pita rounds into triangles and place them on a baking sheet. Brush with olive oil and sprinkle with garlic powder and salt. Bake for 8–10 minutes, until golden and crisp. Set aside.
Step 2: Make the Dip Mixture : In a large bowl, combine cream cheese, sour cream, and mayonnaise. Beat until smooth and creamy. Add chopped spinach, artichokes, garlic, mozzarella, Parmesan, onion powder, pepper, and red pepper flakes. Mix well until evenly combined.
Step 3: Bake the Dip : Transfer the mixture into a small oven-safe baking dish or cast-iron skillet. Smooth the top and sprinkle extra mozzarella and Parmesan on top for a golden crust. Bake for 20–25 minutes at 375°F (190°C), until hot, bubbly, and slightly browned.
Step 4: Serve : Let it cool for 5 minutes before serving. Serve warm with pita chips, toasted baguette slices, or vegetable sticks.