Preheat oven to 375°F. Line a baking tray with parchment paper.
Spread chickpeas out on baking tray and place into the oven for 10-15 minutes to dry out.
Toss chickpeas with olive oil and roast for 30-40 minutes until golden and crisp, stirring after 20 minutes.
Remove chickpeas and turn the oven temperature down to 325°F.
Add chickpeas to a heat-safe bowl and toss with teriyaki sauce. Spread the chickpeas out on the baking tray again and return to the oven for 3-5 minutes to dry out the sauce. Teriyaki sauce can burn easily so keep a close eye on them.
Turn the oven off and leave the chickpeas in the oven for 15-20 minutes until dry and crisp.
Break up any chickpeas that are stuck together and spread out on the baking tray to cool at room temperature.
Once completely cooled, store the roasted chickpeas in an airtight container or bag at room temperature.
Notes
1) Teriyaki Sauce: I use my homemade teriyaki sauce, but a store-bought brand should be fine too.