The leaves are pretty dark with a little clawing to so it could be nutrient burn, maybe some excess calcium… see the middle circle of the picture below
So, maybe if I give it a good flush?
I would do a water only next time make sure you have the ph right and water enough to get a quart or more runoff then check the ph and ppm of the last part of it to make sure you are good. Your plant doesn’t look to bad just a little over fed
I dont know about calcium im thinking more along the lines of a possible phosphorus def going by the edges of the leaves thats typically
how phosphorus def look and start like i could be wrong cause with nute burn it starts from the tip and works its way back if im not mistaken