Step 1: Preheat your oven to 375°F (190°C). Line two large baking sheets with parchment paper for easy cleanup and to prevent sticking.
Step 2: Stack the pita bread rounds and cut them into 8 equal wedges, similar to slicing a pizza. Alternatively, you can cut them into strips or squares.
Step 3: In a large bowl, combine the pita wedges, olive oil, garlic powder, dried oregano (if using), sea salt, and black pepper. Toss gently but thoroughly until all the pita pieces are evenly coated with oil and seasoning.
Step 4: Arrange the seasoned pita wedges in a single layer on the prepared baking sheets. Ensure they are not overlapping to allow for even crisping. If necessary, bake in two batches.
Step 5: Bake for 10-14 minutes, or until the pita chips are golden brown and crispy. Halfway through the baking time (around 5-7 minutes), flip the chips to ensure even browning on both sides. Keep a close eye on them during the last few minutes, as they can burn quickly.
Step 6: Remove the baking sheets from the oven and transfer the homemade baked pita chips to a wire rack to cool completely. They will continue to crisp up as they cool. Serve immediately or store in an airtight container.