Preheat the air fryer to 400°F.
In a large bowl, place in the tenderloin along with 1 tbsp olive oil, 1 tsp mustard, 1/4 tsp black pepper, 3 parts of the salt (3/8 tsp), 1/2 tsp paprika, cayenne, garlic powder, onion powder, brown sugar, fresh thyme, and garlic. Massage to season the meat thoroughly.
In another large bowl, place inside bell peppers, green beans, zucchini, and toss with melted butter, dried oregano, 1/4 tsp black pepper, and 1/2 tsp paprika.
Open the air fryer, and place in one piece of marinated tenderloin along with half the amount of vegetables. Cook for 15 minutes in the air fryer. We’re doing it in two batches, but if your air fryer is large, you can cook everything at once. Remember to keep everything in one layer.
While it’s cooking, make the sauce. In a small bowl combine honey, 2 tsp mustard, whole grain mustard, 1 part of the salt (1/8 tsp), and 3 tbsp olive oil.
When it’s done cooking, allow the meat to rest for at least five minutes before serving. To serve, cut the tenderloin into half inch slices, place them on serving plates along with the vegetables. Sprinkle parsley over the top and drizzle with sauce.