Fitness influencer Noelle Leyva is accusing fellow influencer Bradley Martyn of getting physical with her at a Halloween party … and we’ve learned cops are now investigating … while he adamantly denies her claims.

Now, Noelle is seeking court-ordered protection from her former business associate … claiming he violently shoved her to the ground and left her injured.

In her newly filed petition for a restraining order, obtained by TMZ, Noelle claims Bradley hit her across the chest and pushed her to the ground.

She says she’s now “scared, anxious, and fearful” for her life.

Noelle previously blasted Bradley on Instagram, claiming he pushed her with “full force” while calling her a “disgusting whore” … and alleged multiple people witnessed the encounter.

And she’s brought backup … three witnesses provided statements supporting her account, with one claiming Bradley used both hands to shove her backward.