Is ONE PIECE episode 1053 filler?
Canon No, episode 1053 of ONE PIECE is canon.
#1053
Sanji's Mutation? The Two Arms in Crisis!
サンジの異変 両翼黄色信号!
Aired 26 Feb 2023
Mochibayo compiled this list from MyAnimeList's labels, because MyAnimeList's episode data is not reaching us at the moment.