Light burn and heat stress , if that continues you plant will sadly die ... you need to reduce heat or move you lamp a lot higher even leds need two foot away from a plant if the ppdf is strong ... if this helps please select me for answered question
Move the lights away by another 10cm, also try putting your palm on the top bud and check the heat; if your hand feels uncomfortable, move them a bit further away. Other than that, it's perfect, well done!!
Looks like you're experiencing light stress, the leaves are cupping pretty severely and burnt tips + curling + some yellowing all point to that, back the lights off a bit, either dim them if you can or lift 'em up a bit