Grill and marinade (pork)
Preheat grill to medium-high and brush grate with oil. In a bowl, whisk honey, chili powder, salt, and lime juice; add pork tenderloin and marinate 10–15 minutes. While marinating, chop all hash vegetables.
Sweet potato hash
Heat a griddle to medium-high and coat with vegetable oil cooking spray. Toss sweet potato, corn, poblano, and red onion with olive oil, then cook on the griddle 15–20 minutes until soft with grill marks. Return to a bowl and toss with cheese, chives, lime juice, salt, and pepper.
Pork
Grill tenderloin about 10 minutes per side until internal temperature reaches 150°F. Rest 5 minutes, then slice into 1 1/2-inch-thick pieces.
Serve
Scoop hash onto plates and serve with sliced tenderloin.