It is permitted, but it is not ideal. So I think it is “extraordinary”. From the Roman Missal:
“17. The book and candle may be incensed. Then the deacon or, if there is no deacon, the priest sings the Easter proclamation at the lectern or pulpit. All stand and hold lighted candles.
If necessary, the Easter proclamation may be sung by one who is not a deacon. In this case the bracketed words My dearest friends up to the end of the introduction are omitted, as it the greeting The Lord be with you.
The Easter proclamation may be sung either in the long or short form. The conferences of bishops may also adapt the text by inserting acclamations for the people.”
(Roman Missal, Catholic Book Publishing Co., New York, 1985, page 174, The Easter Vigil).
The 2002 Latin edition of the Roman Missal also seems to have the same provision.
“Praeconium paschale annuntiari potest, absente diacono, ab ipso sacerdote vel ab alio presbytero concelebrante. Si vero, pro necessitate cantor laicus Praeconium annuntiat, omittit verb Quapropter astantes vos usque ad finem invitationis, necnon salutationem Dominus vobiscum.”
(Missale Romanum, Libreria Editrice Vaticana, 2002, ISBN: 8820972719, page 341).
It first has the deacon, then the celebrant or concelebrants. Then the provision, if necessary a lay cantor. It also has the bracketed text not to be sung by a lay cantor.