Heat oven to 400°F. Line a sheet pan with parchment.
Rinse, drain, and pat the chickpeas very dry. Discard any loose skins.
Toss chickpeas with olive oil and a pinch of salt. Spread in a single layer on the pan.
Roast 25–30 minutes, shaking the pan halfway, until golden and crisp.
Stir honey, cinnamon, and vanilla in a large bowl. Warm 10–15 seconds if needed to loosen.
Toss hot chickpeas in the honey mixture until evenly coated.
Return coated chickpeas to the pan and bake 5–7 minutes to set the glaze.
Cool completely on the pan. They crisp further as they cool.