My top bud feels a little crispy , is that normal

Quite possibly too close to the light. If it is feeling crispy and showing some signs of burnt edges then that would be sure sign of being too close. Also, it does appear like you might be getting a slight Fox Tail on the top which is another sign of being too close. This happened to me a few weeks before harvest and my pure laziness just forgot to raise the lights after I set them after the stretch and it still grew a few inches. Top was getting well over 1000 PPFD. Raise the light or turn it down a notch. Hope this helps.