Zen Headbutt doesn't get boosted because Hawlucha isn't grounded.Personally I think Indeedee (F) is a great partner for Hawlucha this gen as it can set up Light Screen and Reflect while setting up a Psychic terrain, and also use Aromatherapy for support. Hawlucha then can come Swords Dance safely then Dynamax and clean up with Brave Bird, Close Combat and I use Zen Headbutt because of Psychic terrain boost but I feel there may be a better moves. (Thunder Punch, Stone Edge etc)