I came back again this week and the diavolo was definitely very spicy! I think the amount of sauce can vary each time, because I remember thinking the pasta was slightly dry last time, but definitely not this time. I also tried the meatball instead of crispy chicken this time - it's literally one giant meatball! It was very mushy and did not taste like much, and I was disappointed because of how good I remembered the crispy chicken to be. I would suggest to stay away from the meatball.
The lines were still really long, maybe because I went during lunch time, but I would still recommend ordering online if you can.