Preheat the Oven: Preheat the oven to 350°F (176°C) and prepare a bare baking sheet or line it with parchment paper.
Drain the Chickpeas: Drain the chickpeas very well; if using oil, rinse them thoroughly with water before draining again, while the oil-free version should only be drained without rinsing.
Dry the Chickpeas: Spread the drained chickpeas over a clean, absorbent towel and gently roll them with your hands to remove as much moisture as possible.
Remove the Skins: As you dry the chickpeas, some skins will loosen and come away; remove the skins that come off naturally, or peel all the chickpeas if you want slightly greater crispiness.
Coat with Oil: Transfer the dried chickpeas to a mixing bowl, add the avocado or neutral oil, and toss thoroughly until evenly coated.
Roast the Chickpeas: Spread the oiled chickpeas over the prepared baking sheet and bake for 45 minutes, or until they are golden brown and dry and crispy to the touch.
Turn During Baking: About halfway through baking, turn the pan around and shake the chickpeas to encourage more even cooking.
Check for Crispness: Keep in mind that peeled chickpeas cook faster than unpeeled chickpeas, and chickpeas prepared without oil also cook faster, so check their texture accordingly.
Prepare the BBQ Seasoning: While the chickpeas are roasting, combine the maple syrup, smoked paprika, chili powder, garlic powder, sea salt, black pepper, and optional cayenne pepper in a medium mixing bowl.
Form the Seasoning Paste: Stir the seasoning ingredients together until they form a paste, making sure the spices are evenly incorporated.
Coat the Warm Chickpeas: Remove the roasted chickpeas from the oven while they are still warm, add them to the seasoning mixture, and gently toss until every chickpea is evenly coated.
Set the Seasoning: Return the seasoned chickpeas to the baking sheet and allow them to cool completely so the BBQ coating can dry and set.
Serve or Store: Enjoy the chickpeas as a snack or use them as a crunchy topping for grain bowls, kale salads, or chopped salads; for storage, place them in a container or jar without tightly covering it so they can breathe and remain crisp longer.
Freeze for Longer Storage: For longer storage, seal the chickpeas well and freeze them for up to 1 month.