In generel i like the chakra idea itself but the execution is not the best.
I also think that i would not be OP if they change it to something where we can use forbitten chakra twice a minute or so and monk would then a bit than nin/ drg due to the missing raid damage utility like nin/ drg have.

But lets wait a bit, maybe SE will see that some QoL changes would be nice, even if they have to lower the potency of forbitten chakra since it would be used more often and make more fun to play monk.