Chopper’s Power-Up: Full Mastery of Observation and Armament Haki ⋆ Anime & Manga

PART 1: Zoan Awakening

Three factors of Zoan Awakening have been revealed:

1. GIANT TRANSFORMATION
Impel Down Awakened Jail Beast Guards

2. EARLY RECOVERY

3. INSANE DURABILITY
Jack the Drought; an Ancient Zoan user (possibly awakened)

PART 2: Haki, Awakening and the Rumble Ball

Rayleigh, “Haki is a power that exists within every single human being. Presence, Spirit, Aura… It is no different from these basic concepts with which anyone should be familiar. However, the vast majority of people go their whole lives without ever noticing they posses it or else try as they may never succeed in making use of it“.

Zoan Awakening can possibly be defined as, “Awakening is a power that exists within every single Zoan user. Strength, Recovery, Durability… It is no different from these basic concepts with which anyone should be familiar. However, the vast majority of Zoan DF users go their whole lives without ever noticing they posses it or else try as they may never succeed in making use of it”.

Chopper’s Monster Point is of Giant size but Recovery and Durability can not be realized because this form is currently for a limited time of 3 minutes only.
It is safe to assume that the Rumble Ball allows Chopper to forcibly enter his awakened form for a limited amount of time.