To begin, preheat your oven to 375°F/190°C.
In a small bowl, combine garlic and mustard. In another bowl, mix together dried thyme, black pepper, and sea salt.
2 garlic cloves, 2 tablespoon dried thyme, 3 tablespoon Dijon mustard, 1 teaspoon freshly ground black pepper, ½ teaspoon sea salt
Place the pork tenderloins onto a baking dish and rub ¾ of the mustard mixture onto each tenderloin. Next, sprinkle ¾ of the spice mixture on top of the pork, pressing it into the mustard. Set aside the remaining seasoning for later.
2 lb pork tenderloin
Roast the pork tenderloins in the oven for 25 minutes. Then, add the asparagus and bell peppers to the baking dish, pour in ¼ cup of chicken broth, and sprinkle the vegetables with the remaining herb and mustard mixture.
1 lb asparagus, 2 bell peppers, 1 cup chicken broth
Roast for another 15 to 20 minutes or until the pork is cooked through and the vegetables are tender and browning. Let the pork stand for 5 minutes on a cutting board while you plate the vegetables.
While the pork rests, add the rest of the broth to the baking dish over medium heat, and simmer for 3-4 minutes to reduce and scrape any cooked bits on the bottom of the pan.
Finally, slice the pork tenderloins, serve them over the vegetables, and drizzle the sauce on top.