Suppose if you want to show the select control only for the first row, you can give a check using the index
if it is equals ZERO, then show the select box, else not.
Please find the updated code below, check if it works for you.
<tr ng-repeat="(lunches,price) in lunchTwo">
<td>
<label class="label_wraptext">{{lunches}}</label>
</td>
<td class="td_width">
</td>
<td>
<label>{{price}}</label>
</td>
<td style="padding-left:190px">
</td>
<td>
<select ng-controller="Quantity" ng-show="$index==0">
<option ng-repeat="key in notSorted(data)" ng-init="value = data[key]">
{{key}}
</option>
</select>
</td>
</tr>