Heat oil in a largeovenproof skillet over medium-high heat.Season chicken with salt and pepper.Working in 2 batches, cook until browned,about 5 minutes per side; transfer to a plate.
Pour off all but 1 tablespoon drippings from pan.
Add onion and garlic; cook, stirring often,until softened, about 3 minutes.
Add tomatopaste and cook, stirring, until beginningto darken, about 1 minute.
Add chickpeas,harissa, and broth; bring to a simmer.
Nestle chicken, skin side up, inchickpeas; transfer skillet to oven. Roastuntil chicken is cooked through, 20–25minutes. Top with parsley and servewith lemon wedges for squeezing over.