Preheat griddle to medium. Add cooking oil, sweet potatoes, kosher salt, pepper, and squirt some water over top. Cover with melting dome for 7 to 8 minutes. Remove dome a few times to mix with spatulas and add more water before covering again.
Set melting dome aside. Add more oil to an empty space on the griddle along with the chicken, apples, kosher salt, and pepper. Cook and mix a few times, keeping the sweet potatoes, chicken, and apples separate for 3 minutes, then mix them all together with spatulas and cook another 3 to 4 minutes.
Add ground cumin, paprika, kale, and a little more kosher salt and pepper. Mix with spatulas 3 more minutes. Add Dijon mustard and honey, mix for 1 more minute. Serve with goat cheese crumbles over top.