2 tablespoons olive oil
2 tablespoons unsalted butter
4 (3/4-inch-thick) boneless pork chops (about 1 3/4 pounds total)
1 teaspoon kosher salt, plus more as needed
1/2 teaspoon freshly ground black pepper, plus more as needed
1 pound cremini mushrooms, thinly sliced
4 cloves garlic, minced
1 teaspoon chopped fresh thyme leaves
2 cups low-sodium chicken broth
1 tablespoon Dijon mustard
3 tablespoons heavy cream