Bring a large pot of water to a boil. Add the rice noodles and cook according to package instructions, usually 4 to 6 minutes, until tender but still slightly firm. Drain and rinse under cold water to stop cooking and prevent sticking. Set aside.
In a small bowl, whisk together the creamy peanut butter, soy sauce, honey, sriracha sauce, minced garlic, and grated ginger until smooth. If the sauce is too thick, add a teaspoon or two of warm water to reach your desired consistency. Set aside.
Heat the vegetable oil in a large skillet or wok over medium-high heat. Season the thinly sliced chicken breast with salt and pepper. Add the chicken to the pan in a single layer and cook for about 3-4 minutes on each side, or until golden brown and cooked through. Remove the chicken from the skillet and set aside.
In the same skillet, add the sliced red bell pepper and snap peas. Stir-fry for 2-3 minutes until they are crisp-tender but still vibrant in color. Add the chopped green onions and cook for an additional minute.
Return the cooked chicken to the skillet with the vegetables. Add the drained rice noodles and pour the peanut sauce over everything. Toss well to evenly coat all the ingredients. Cook for another 1-2 minutes to warm through and let the flavors meld.
Transfer the Spicy Peanut Chicken Noodles to serving bowls or plates. Optionally, garnish with extra chopped green onions, crushed peanuts, or a squeeze of lime for added brightness.