flectra/addons/product_expiry/views/report_deliveryslip.xml

<flectra>
    <template id="report_delivery_document_inherit_product_expiry" inherit_id="stock.report_delivery_document">
        <xpath expr="//th[@name='lot_serial']" position="inside">
            <t t-if="any([move_lines.lot_id.use_date for move_lines in o.move_line_ids])">
                <span class="pull-right">Expiry Date</span>
            </t>
        </xpath>
        <xpath expr="//td[@name='lot_qty']" position="after">
            <td>
                <span class="pull-right" t-field="move_line.lot_id.use_date" t-field-options='{"widget": "date"}'/>
            </td>
        </xpath>
    </template>
</flectra>