ok now here's the big part

put on the suit

you cant wear anything else

oh right no mask. chicken suit but no mask your face has to be visible to the chicken

bring the chicken to a public area. a park or something

let the chicken go and chase it around

and shout c'thulhu f'taughn at it. that's important ok? c'thulhu f'taughn

the words need to draw on the power of people nearby to work properly