The IRS' MeF Schema allows one F.8843 filed electronically with 1040NR.  However, the form is not supported by either Lacerte or ProConnect Tax.

You could theoretically prepare it outside of ProConnect Tax and attach it electronically before e-filing.  If you do, make sure you name the attachment clearly as Form 8843.

There is no guarantee, however, that the IRS will process unsupported forms (especially those that are not listed in the Link to form dropdown) because the MeF is not programmed to handle these automatically but the compliance risk with F.8843 should be relatively low.

Intuit could well have developed one for 1040NR but it would appear that they didn't do so because they view F.8843 as, primarily, an independent information return.