I pulled my front bracket and although illegal in WA, I’m taking my chances. There are only two holes which don’t bother me too much, personally. That said there are all kinds of sites out there that sell the OEM lower valance/skid plate. You could replace it if you really want the cleanest look.
https://www.google.com/shopping/product/1?q=sierra+at4+lower+valance&client=safari&hl=en-us&biw=414&bih=719&tbs=vw:l,ss:44&prmd=sinv&prds=num:1,of:1,epd:7138793249985547595,prmr:1,pid:7138793249985547595,cs:1