Meanwhile, in a large nonstick skillet or wok, heat 1 tbsp olive oil over high heat and add the white pieces of bok choy, cooking for about 1-2 minutes, stirring often
Add the bok choy greens and stir for 1-2 minutes, until they have wilted
Remove the bok choy from the pan and add the remaining 1 tbsp olive oil, green onion whites, ginger, sriracha, and pork, cooking until the pork is no longer pink, about 5 minutes
Pour in the vegetable broth and sugar
In a small bowl, mix the cornstarch in water and add to the pan
Bring to a boil and cook, stirring often, until the sauce starts to thicken, about 3-5 minutes
Fold the cooked noodles and bok choy back into the pan, stirring until heated through
Serve immediately garnished with the remaining greens of the green onions and crushed red pepper flakes