Short answer: Best to avoid.

Why:

• Peanuts (groundnuts) grow underground, so many Jain maryadas treat them like kand-mool (bhūmi-gata). During Paryushan, both Shvetambar and Digambar traditions generally avoid kand-mool to reduce himsa.
• If your local sangh has a different guideline, follow that maryada; but the safer, more traditional practice is to not eat peanuts.

What to take instead:

• Tree nuts like almonds, cashews, walnuts, raisins/dry fruits, and simple grains/dals prepared plainly before sunset.

For simple allowed items during Paryushan, see: and a practical 8‑day food guide: