Mix the courgette, thyme leaves, olive oil and seasoning in a bowl.
Heat a griddle pan until hot. Place the courgette mixture onto the griddle pan and cook for 1-2 minutes.
Add the halloumi slices and continue to griddle for 3-4 minutes, or until golden brown.
Arrange the toasted ciabatta on a plate and place the griddled halloumi and courgette on top to serve.