Preheat the oven to 375°F and line a baking sheet with parchment paper.
Pat chickpeas dry with a kitchen towel, then toss with olive oil, onion powder, and a pinch of salt.
Spread chickpeas in a single layer on the baking sheet and roast for 25 minutes until crispy.
Bring a large pot of salted water to a boil, then cook pasta until al dente according to package directions.
Drain pasta and toss with 2 teaspoons of extra virgin olive oil to prevent sticking; allow to cool.
Whisk together tahini, vegan yogurt, Dijon mustard, lemon juice, apple cider vinegar, crushed garlic, cayenne, salt, nutritional yeast (optional), cold water, and dill until smooth.
In a large bowl, combine pasta, sliced cucumbers, cherry tomatoes, and roasted chickpeas.
Pour the tahini dressing over the salad and toss to coat evenly.
Adjust seasoning with fresh cracked pepper or additional salt as desired before serving.