Nice looking meal. I need to try some sweet potatoes roasted simply like that, instead of mashed into a casserole.
I peeled the sweet potatoes and cut them into manageable size chunks. Placed them in a Ziploc bag and drizzled some Roasted Garlic EVOO and Fagundes Seasoning (salt/pepper, etc works great too). Shook the taters until they were lightly coated and placed them in a greased 8x6x14 foil pan. Covered tightly with foil. Bake on the pellet grill or oven at 350ºF for 1½ hours. Worked out great ... the spuds and the chicken both took 1½ hours!
Following a Paleo lifestyle and Sweet Potatoes are on the acceptable list while regular spuds are not. Sweet taters are high in fiber, high in antioxidants, have a low glycemic index, and an excellent source of potassium.