Preheat the oven to 400 degrees and line a sheet pan with parchment paper.
In a medium bowl, combine olive oil, lemon juice, garlic, cumin, smoked paprika, turmeric, cinnamon, crushed red pepper and salt. Mix until everything is combined.
Place the cauliflower and chickpeas in the bowl, and mix thoroughly to coat them with the spice mixture
Spread the cauliflower and chickpeas onto the prepared sheet pan in a single layer.
Bake in the oven for 20-30 minutes, until the cauliflower is fully cooked and the edges begin to caramelize.
While the cauliflower and chickpeas are in the oven, prepare the sauce by mixing all the ingredients in a small bowl until smooth, or by using a small blender.
Remove the cauliflower and chickpeas from the oven and serve on pita or naan, drizzled with green garlic sauce.