The quick, super-easy barbecue sauce in this recipe would be great on roasted chicken as well. Serve with your favorite slaw and a cold lager.
Preheat grill to medium-high.
Stir ketchup, vinegar, molasses, mustard, garlic powder and onion powder together in a small saucepan. Bring to a simmer over medium heat. Cook until thickened and flavors have blended, 5 to 10 minutes.
Oil the grill rack (see Tip). Season both sides of pork with salt and pepper. Grill the pork for 5 minutes. Flip and baste with some of the sauce. Continue cooking until an instant-read thermometer inserted in the thickest part reads 145 degrees F, 4 to 5 minutes more. Serve with the remaining sauce.
To make ahead: Prepare barbecue sauce (Step 2) up to 3 days ahead and refrigerate.
Tip: To oil a grill rack, oil a folded paper towel, hold it with tongs and rub it over the rack. (Do not use cooking spray on a hot grill.)
3 lean-protein, 1/2 other carbohydrate