Par-boil. Boil the broccoli, cauliflower, and potatoes in salted water for 4 to 5 minutes until just fork-tender. Drain well.
Combine and season. Toss the par-boiled vegetables, bell pepper, red onion, and chickpeas with olive oil and the spice mix.
Air fry or roast. Air fryer: 400°F (200°C) for 15 to 18 minutes. Single layer is ideal, but if your basket is small you can pile it up and stir every few minutes. Oven: 425°F (220°C) for 25 to 30 minutes on a sheet pan, tossing once halfway.
Build the plate. Spread hummus on a plate, pile the hot vegetables on top, scatter with parsley, drizzle with chili crisp.
Notes
Par-boiling is the trick. Don't skip it.
Dry the chickpeas. Wet chickpeas won't crisp.
Storage: 4 days in the fridge, hummus stored separately. Reheat in air fryer at 350°F (180°C) for 3 to 5 minutes.