Mold/mildew?

Hey y'all,

Can someone identify if this is mildew/mold?
This is an outdoor plant with plenty of ventilation.
This happened last year when I grew and I assumed that it was powdery mildew, but maybe it's THC crystals? It's only on the leaves with crystals and not occuring on any fan leaves. Just want to make sure before I spray it or dunk it in hydrogen peroxide and water....

PM

Yep. Pm. Once it's in the buds your facked
Overlapping leaves, poor overall health, rh%, carrier plants, all have a role in aiding the pm.