Pat the pork chops dry with paper towels. Rub both sides with olive oil, then season with coriander, cumin, thyme, salt, and pepper.
Heat a large skillet over medium-high heat. Add the pork chops and sear for 3–4 minutes per side, or until golden brown and cooked through. Transfer to a plate and cover to keep warm.
In the same skillet, add a little more oil if needed, then sauté the diced onion and sliced mushrooms over medium heat until soft and golden, about 6–8 minutes.
Pour in the Marsala wine, scraping up any browned bits from the bottom. Let it simmer for 2–3 minutes to reduce slightly.
Stir in the heavy cream and bring to a low simmer. Cook for 3–4 minutes until slightly thickened.
Stir in the frozen peas and return the pork chops to the skillet. Simmer for 2–3 minutes more, or until everything is heated through.
Spoon the sauce and vegetables over the pork chops and serve immediately.