My Grimal looked like that for a while, when in a pot, and took a bit to bounce back after planted in ground. Still doesn't look quite right, but is moving in the right direction. Yours looks healthy and strong enough, should be okay.
How long has it been in that pot?
Make sure it doesn't dry out.
Dappled sunlight is what I would go for at that size and looking stressed with few leaves. Some mistings might be good. Fert, as mentioned, is a consideration.
Grimal seems to grow faster than my other jabos. Hopefully it will take off for you soon.