Prepare the rice according to the instructions on the package.
Warm olive oil and chili flakes in a large skillet over medium heat. Sauté the diced onion until it turns translucent.
Add the ground beef into the pan, breaking it apart with a firm spatula until fully browned. Then stir in the minced garlic and season with salt and cracked pepper.
While the beef cooks, whisk together sriracha, maple syrup, tamari, and sesame oil in a small bowl to create the sauce.
Mix the kidney beans, diced zucchini, and red bell pepper into the beef mixture. Season with salt and cracked pepper, cooking until the vegetables are tender.
Pour the prepared sauce over the beef and vegetable mix, stirring thoroughly to coat everything evenly.
Fold in the arugula and chopped cilantro, combining gently. Taste and adjust seasonings if needed.
Divide the cooked rice among bowls and spoon the beef mixture on top. Serve immediately.