I found something like this
<q-tab v-for="tab in tabs" :key="tab.code" :name="tab.code" content-class="full-width">
<q-item dense class="full-width">
<q-item-section avatar class="float-left">
<q-avatar :icon="tab.code" />
</q-item-section>
<q-item-section>{{tab.title}}</q-item-section>
</q-item>
</q-tab>