Rinse the quinoa and add to a saucepan with 400 ml (1 2/3 cups) of water. Bring to a boil over high heat, cover and simmer on low for 15 minutes, then rest 5 minutes and spread out to cool.
Slice the halloumi into 1 cm (1/2 inch) slabs and pat dry.
Heat a dry non-stick or cast-iron skillet over medium-high heat. Cook the halloumi for about 2 minutes per side, until deep golden and soft inside.
Dice the cucumber, halve the tomatoes and chop the mint and parsley.
Whisk the lemon juice, olive oil and black pepper in a large bowl.
Toss the quinoa, chickpeas, vegetables and herbs with the dressing and top with the warm halloumi.