Nouns ending in -et are masculine.
The suffix often forms a diminutive or small object.
Is poulet masculine or feminine?
lepoulet
The rule behind it
99.2% of -et nouns are masculine
In context
Elle fait du poulet comme je l'aime.
She cooks chicken the way I like.
Nettoyez le poulet avant de le faire cuire.
Draw a chicken before cooking.
J'aime mieux le lapin que le poulet.
I prefer rabbit to chicken.