Heat 1 tablespoon (15 ml) of canola oil in a large skillet or wok over medium-high heat.
Add the ground chicken, kosher salt, and black pepper. Press the meat into a flat layer with a spatula and let it cook undisturbed for 3 minutes to brown.
Break the chicken into small pieces. Add the chopped mushrooms, 1 tablespoon (15 ml) of soy sauce, 1 tablespoon (15 ml) of fish sauce, and the red pepper flakes.
Cook for about 5 minutes, stirring often, until the mushrooms are very soft and the chicken is fully cooked to a safe internal temperature of 165°F (74°C). Transfer the mixture to a bowl.
Lower the heat to medium. Add the remaining 1 tablespoon (15 ml) of canola oil to the empty skillet.
Add the sliced celery and cook for 1 minute. Add the broccoli slaw and cook for 3 minutes, stirring frequently, until the vegetables are tender but still crisp.
Stir in the minced garlic, minced ginger, and the white parts of the sliced green onions. Cook for 1 additional minute until fragrant.
Return the chicken and mushroom mixture to the skillet. Pour in the remaining 1 tablespoon (15 ml) of soy sauce, 1 tablespoon (15 ml) of fish sauce, and the lime juice. Stir well to combine.
Remove the skillet from the heat. Stir in the cilantro, mint, and the green parts of the green onions before serving.