Heat 1 tablespoon of olive oil in a large skillet over medium-high heat. Add the sliced chicken and cook until browned and cooked through, about 5 to 6 minutes. Remove the chicken to a plate and set aside.
Add the remaining tablespoon of olive oil to the same skillet. Stir in the onion, garlic, and ginger. Cook for 1 minute until fragrant.
Add the mixed vegetables and cook for 3 to 4 minutes, stirring often, until they start to soften but still stay crisp.
Return the cooked chicken to the skillet. Pour in the soy sauce and fish sauce. Stir everything together and cook for another 2 minutes.
Add the cauliflower rice and red chili flakes. Cook for 3 minutes, stirring frequently, until the cauliflower rice is heated through.
Turn off the heat and stir in the Thai basil leaves until they just wilt.