Preheat the oven to 200C, fan-forced. Fill a medium saucepan three-quarters full with water and bring to the boil. Add the rice and cook for 25-27 mins until tender. Drain.
Step 2 — Prep vegetables
Meanwhile, line 2 oven trays with baking paper. Cut the capsicum into 2cm-thick strips. Cut the onion into wedges. Tear the kale leaves into small pieces. Cut the stems into 3cm lengths, keeping the stems and leaves separate.
Step 3 — Roast vegetables
Combine the harissa (reduce for less of a chilli kick) and 2 tsp extra virgin olive oil in a large bowl and season with salt and pepper. Add the capsicum, onion and kale stems and toss to coat. Put on a lined tray, reserving the bowl, and roast for 20 mins or until almost tender.
Step 4 — Roast salmon
While the vegetables are roasting, put the salmon, skin-side down, on the remaining lined tray. Drizzle with 2 tsp extra virgin olive oil and scatter with the kofta seasoning. Roast for 5-6 mins until just cooked or cooked to your liking.
Step 5 — Toss kale and walnuts
While the salmon is roasting, add the kale leaves, walnuts and 2 tsp extra virgin olive oil to the reserved bowl and toss to coat.
Step 6 — Roast kale and serve
Add the kale and walnuts to the tray with the vegetables. Roast for a further 3-4 mins until the vegetables are tender, the kale leaves are crisp and the walnuts are toasted. Divide the rice, vegetables, walnuts and salmon among plates. Serve with the red pesto.