For the chickpeas: Preheat the oven to 400 degrees F.
Put a few layers of paper towels on your work surface. Strain and rinse the chickpeas in a colander, then shake off as much water as possible. Transfer them to the paper towels, top with more paper towels, then pat them gently and roll them around a bit to dry. Discard any papery skins that have peeled off or are about to. Slide the chickpeas onto a large rimmed baking sheet, and let stand at room temperature for at least 30 minutes.
Roast the chickpeas, stirring them occasionally to keep them from burning in spots, until a little shriveled and pretty crispy, about 45 minutes. Start checking them at around 35 minutes to make sure they are not burning.
Meanwhile, make the seasoning mixes. For the Taco Seasoning: Mix the chili powder, coriander, cumin, granulated garlic and onion and 1/2 teaspoon salt in a small bowl.
For the Vinegar-Lime Seasoning: Mix the vinegar, lime zest and 1/2 teaspoon salt in a small bowl.
For the Onion-Garlic Seasoning: Mix the granulated garlic and onion and 1/2 teaspoon salt in a small bowl.
When the chickpeas are done, divide them evenly among 3 medium bowls. Toss each batch with 1 tablespoon of the oil, then toss 1 batch with each of the seasoning mixes.
Return the chickpeas to the baking sheet, keeping each batch separate. Roast them for 3 minutes, just to cook the seasonings slightly. Let cool completely on the pan on a rack, about 30 minutes, then transfer to airtight containers. The chickpeas will keep for 1 day and will soften slightly as they sit.
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