In a small bowl, mix together the sun-dried tomato powder, sweet paprika, cayenne, cumin, garlic powder, onion powder, salt, and lemon pepper. Set aside.
Cut each pita into triangles—about 8 pieces per pita.
Pour vegetable oil into a skillet or frying pan and heat it to around 325–350°F.
Fry the pita triangles in batches, making sure not to overcrowd the pan. Cook until the edges are golden and crispy but the centers still have a bit of softness.
Transfer the chips to a wire rack or paper towel to drain off excess oil.
While the chips are still warm, place them in a large bowl and sprinkle the spice mix over them. Toss well to coat evenly.
Serve immediately with your favorite dip, or let cool completely and store in an airtight container for up to 3 days.