It looks like your plant may have received too much water. When your plant’s roots have too much water around them, they are unable to transport water up to the leaves effectively-- that’s why they wilt, curl, crisp, turn yellow, and develop brown spots. You can remove these leaves, they are not supporting your plant’s photosynthesis.
You may also want to check the pH of your water source. Ideal water pH is 6.5 - 7.0 for cannabis growing in soil.
It also looks like this plant is not far away from harvest time-- you’re almost there! 