Preheat the oven to 200 degrees Celsius.
Place the washed sweet potatoes on a parchment or aluminium foil covered baking sheet.
Make small holes all over the sweet potato using a fork.
Bake in the oven for 35-50 minutes (depending on how big your potatoes are).
Meanwhile combine yogurt, tahini and lemon in a small bowl. Taste to check if you need more tahini or lemon jucie.
When there's about 10 minutes left for the sweet potato to be done preheat a nonstick pan over medium heat with a little bit of olive oil (if using).
Drain and rinse the chickpeas. Dry them a little bit using a paper towl.
Add the chickpeas to the pan.
Add cumin, cinnamon (if using) and salt and mix until the spices cover all the chickpeas.
Fry until golden brown and warm.
When the potatoes are ready, take the baking sheet out of the oven.
Carefuly cut the sweet potatoes in the middle lenghtwise. But dont cut through all the way.
Add the fried chickpeas and top with the yogurt/tahini dressing.
Garnish with parsley.