Blowjob with condom?

Recently I’ve been messing around with a friend. We both know it’s sex only and no feelings. He has given me head but I haven’t given head and I want to but not sure if I should give him a blowjob with a condom on? We use protection every time we have sex but I’ve never really heard of giving head while the guy wears a condom lol would it be weird if I tell him to put a confirm on just for oral??