Slice the halloumi cheese into 1/4-inch thickness.
Rinse the slices under cold water and then pat dry with paper towels.
Cut the ciabatta bun into 1-inch pieces, tossing it with 1 tbsp oil, 1/2 tsp garlic salt, and pepper in a large bowl.
Peel the clementine and separate it into segments.
Cook the ciabatta pieces for about 5 – 6 minutes over medium heat in a large pan, stirring occasionally until golden brown on all sides. Transfer the croutons back to the large bowl.
Toast the pepitas in the same pan for about 1 – 3 minutes, stirring often until golden brown. Then transfer to the large bowl with croutons.
Next, add halloumi to the same pan and cook until golden brown, 1 – 2 min per side, and transfer to a plate.
Add spring mix and clementine segments to the large bowl with croutons and pepitas.
Drizzle over 1 tbsp of the balsamic glaze and 2 tbsp oil. Season with salt and pepper, then toss to combine.
Divide the salad between plates and top with halloumi and the remaining balsamic glaze.