What he ^^^ said.
SLT means two things on a 2017 1500... 1) it was previously a fleet truck, and 2) chrome, chrome, and more chrome.
So... ideas:
You can get a paintable new grille from lots of places (rockauto.com is a good place to start - they're a vendor here too) for roughly $200, and then you can murder it out in black with little effort yourself, plastidip it if you feel like the rubberized look, or have a bodyshop hit it with matching paint for (umm, a lot more). Bumpers you will want to get first though, for reasons PullYa mentioned (unless you're getting some aggressive-looking custom thingy, in which case, well...)
Maybe for the grille you can hit up the junkyards first, and perhaps hope they got a painted grille with matching color? Odds are pretty decent from the color I'm seeing, and definitely worth a few phone calls.
An alternative would be to plastidip the bumper, then get a bull bar or grille guard bolted on that'll accommodate fog lights.
In my case, I loves the chrome (within reason), so for me it's probably going to be a tasteful grille guard with a small lightbar to act as fog lights.