Bootstrap 4 Input Group Append issue

Using a form in-line class this scenario has two columns of label text inputs.  There are a few that have added input-group-appends with font awesome calendar or search icons.  For whatever reason those are shorter than the others.  Below is an example with two columns also original has six rows.  Also they are centered.  I could make the labels right justified by using justify-content-end but not the inputs.  It would be nice to left justify these because the gap between the label and the input would be smaller.

<form class="form-inline">
<div class="form-group row">
<label class="col-3 col-form-label justify-content-end">First Name:</label>
<div class="input-group col-3" class="form-control">
<input type="text" class"form-control">
<div class="input-group-append">
<span class="input-group-text"><i class="fa fa-search"></i></span>
</div>
</div>
<label class="col-3 col-form-label justify-content-end">Last Name:</label>
<div class="input-group col-3" class="form-control">
<input type="text" class"form-control">
<div class="input-group-append">
<span class="input-group-text"><i class="fa fa-search"></i></span>
</div>
</div>
</div>
</form>