Toast the Bread: Lightly toast the pita or focaccia for extra crispness.
Grill the Halloumi or Tofu: Heat a pan with olive oil and grill halloumi or tofu slices for 2-3 minutes per side until golden. Sprinkle with oregano.
Spread the Hummus: Evenly spread hummus (or tzatziki) on each slice of bread.
Layer the Ingredients: Add grilled halloumi or tofu, cucumber slices, sun-dried tomatoes, roasted red peppers, feta or goat cheese, and arugula.
Assemble the Sandwich: Stack the layers and press gently. Secure with toothpicks if needed.
Slice and Serve: Cut into halves or quarters and enjoy!