Preheat the oven to 200°C/400°F/Gas 6.
Arrange the beetroot slices on a baking sheet, sprinkle with salt and drizzle generously with olive oil, making sure they’re well covered. Roast in the oven for 45 minutes.
Meanwhile, mix all the marinade ingredients together in a small bowl.
Mix all the dressing ingredients together in a separate bowl until well combined. You want a smooth consistency, so if need be, add another tablespoon of water.
Heat a drizzle of olive oil in a frying pan over a medium heat, then add the garlic and chili and cook for 5 minutes. Add the lentils, season with salt and pepper and fry for 5 minutes.
Once cooled, spoon the lentils onto a large serving plate and spread them out.
Place the rocket on top, add a splash of olive oil and lightly toss the leaves.
Arrange the roast beetroot on top of the rocket, then spoon over the marinade.
Drizzle the salad with the peanut dressing, then serve sprinkled with sesame seeds and fresh chives.