For the Chimichurri: Place the parsley, olive oil, red wine vinegar, dried oregano, cumin, salt, garlic cloves, and crushed red pepper in a food processor. Puree 30 seconds, then scrape the sides down and puree again.
Cut both type of squash and the carrots in half lengthwise. (Cut fat carrots in quarters.) Trim the ends of the asparagus. Place all veggies in a baking dish and add 1/3 cup chimichurri. Sprinkle with salt.
Rub 1/4 cup of the chimichurri over the pork loin and sprinkle with salt. Let the veggies and pork marinate for at least 30 minutes.
Preheat grill to medium heat. Grill the pork for 15-18 minutes, rotating every 4-5 minutes. Let the meat rest 5-10 minutes, then slice into 1/2-inch pieces.
After the pork comes off the grill, place the veggies on the grill. Grill 3-5 minutes per side. Salt and pepper if needed. Serve the pork with the remaining chimichurri drizzled over the top.