Preheat oven to 375 degrees. Toss carrots with salt, pepper, and 1 tbsp olive oil. Place on a baking sheet and roast for 15 - 20 minutes or until carrots are tender.
Combine sriracha, soy sauce, brown sugar, ginger, and garlic and pour over sliced pork. Let marinate for 20 minutes.
Heat a good searing skillet (such as cast iron) over high heat. Add just a little bit of olive oil.
When the oil is hot and shiny, add the pork in a single layer (you may need to do this in batches). Cook, undisturbed, for 1-2 minutes until you are getting that nice caramelized look. Flip and repeat to finish.
Put pork on the side to rest for a few minutes while you saute the spinach in the same pan as the pork and serve.