In small bowl, whisk together lemon rind and juice,onion,oregano,oil,honey,garlic powder,salt and pepper; pour into large plastic bag.
Add pork ribs, turning to coat; seal bag tightly.
Refrigerate, turning bag occasionally, for at least 8 hours or for up to 24 hours.
Arrange ribs on rack in large foil-lined roasting pan; pour marinade all over ribs.
Roast in 400F oven for 10 mins.
Reduce oven temp to 375F; roast, turning once and basting occasionally with marinade, for 1 hour or until meat is tender enough to almost fall off bone.