すみません、この焼き鳥はピーナッツを使っていますか？ — Excuse me, does this yakitori contain peanuts? (Restaurant · Izakaya, Formal — to staff, JLPT N3)

Gesture & etiquette

Point to the menu item (yakitori) and make a questioning gesture.

Always clearly state your allergen. If you have severe allergies, it's safer to avoid dishes where ingredients are not clearly listed or where cross-contamination is possible.