Lay the ciabatta bread on a cutting board and using a serrated knife cut horizontal all the way through the loaf. Slicing it in half lengthwise.
Place the ciabatta bread on the baking sheet. Bake for 5-7 minutes just to get slightly toasted.
In a small bowl mix together the mayo and tomato spread until combined.
Evenly spread over both sides of the ciabatta bread
Evenly add the cheese on both halves. Add the chicken slices on one half followed by the sliced red onions. Place it back into the oven to melt.
Add the tomato slices on top of the onions sprinkle a little salt and black pepper on top.
Add the argula over the tomatoes.
Place the top ciabatta loaf on top and using a serrated knife cut into slices.
Notes
Sun-dried tomato spread is usually located with the sundried tomatoes in the produce section.
I love the flavor the smoked Gouda adds, but you can swap Provolone, mozzarella, or even pepper jack, which are all great options depending on how mild or bold you want the flavor.