Thinly slice the chicken breast into bite-sized strips for quick and even cooking.
Prepare the vegetables by dicing the bell peppers, chopping the onion, and breaking the broccoli into small florets. Mince the garlic and grate the ginger.
Heat the olive oil in a large non-stick skillet or wok over medium-high heat.
Add the chicken strips and stir-fry until they begin to brown and are nearly cooked through, about 4-5 minutes.
Add the onions, garlic, and ginger to the skillet, stirring frequently to combine the flavors.
Mix in the bell peppers and broccoli, cooking until they are just tender yet still crisp, about 3-4 minutes.
Add the cauliflower rice to the pan, stirring well to blend with the other ingredients.
Pour in the low-sodium soy sauce and toss everything together, allowing the flavors to meld for another 1-2 minutes.
Finish by sprinkling the cashews on top for a subtle crunch. Taste and adjust seasonings if necessary.
Serve immediately and enjoy your healthy, protein-packed stir-fry.