Preheat oven to 425°F and line a sheet pan with foil for easy cleanup.
Whisk oil, adobo, cumin, paprika, lime juice, zest, salt, and pepper in a bowl.
Toss chicken in half the sauce and let sit while you prep veggies.
Spread corn, pepper, and onion on the sheet pan and drizzle with remaining sauce.
Nestle chicken among veggies in a single layer.
Roast 18-22 minutes, until chicken reaches 165°F and veggies are slightly charred.
Rest 5 minutes, then sprinkle cilantro if you use it.
Serve with lime wedges and rice or tortillas.