Preheat your oven to 425°F (220°C) and line a large baking sheet with parchment paper.
In a small bowl, mix together the smoked paprika, garlic powder, onion powder, cumin, salt, pepper, and olive oil to create a spice paste.
Pat the pork tenderloin dry with paper towels, then rub the spice paste all over the tenderloin, ensuring it’s well coated.
Arrange the sliced bell peppers, red onion, and zucchini on the prepared baking sheet around the pork tenderloin.
Drizzle a little olive oil over the vegetables and toss them to coat.
Place the seasoned pork tenderloin in the center of the vegetable bed on the baking sheet.
Roast in the preheated oven for 25-30 minutes, or until the pork reaches an internal temperature of 145°F (63°C). The vegetables should be tender and slightly caramelized.
Remove from the oven and let the pork rest for 5-10 minutes before slicing.
Slice the pork tenderloin and serve it alongside the roasted vegetables, garnished with fresh parsley.
Notes
Let the pork rest before slicing for juicier meat.