Sauce prep. Mix the powdered peanut butter, peanut butter, and coconut aminos together in a large bowl. In a separate bowl, mix the garlic and ginger cubes, honey, vinegar, and sriracha together. Set both aside.
Cooking the pasta. Bring a large pot of water to a boil. Start cooking the pasta around the time you take the broccoli out of the pan after step 3. Cook the pasta just shy of al dente, about a minute less than the packaging suggests. Add about ½ cup of the pasta water to the peanut butter sauce bowl and stir until smooth. Use tongs to transfer the cooked noodles to the sauce and toss together. Add more pasta water to thin to your desired consistency.
Pan roasting the broccoli. Heat the olive oil in a large skillet over medium-high heat. Once hot, add the broccoli and toss to coat in the oil. Season with a pinch of salt and pepper. Cook for 6-8 minutes, stirring every couple minutes, until the broccoli is evenly roasted on all sides. Transfer to a bowl and set aside.
Cook the ground chicken in the same pan you cooked the broccoli in. Add to the pan and cook for 2-3 minutes until a golden brown crust forms on one side. Use a spatula to break the chicken apart and fully cook before adding the sauce. Cook for 1-2 minutes until the sauce begins to caramelize on the bottom (don't stir). Turn off the heat and add the broccoli to one side of the pan to keep warm until the noodles are ready.
Plate the noodles and top with the chicken and broccoli OR add the chicken and broccoli to the noodles bowl and toss everything together. You can use a bit more pasta water to help bring everything together if needed.
Garnish with sliced green onion or the chopped peanut garnish in the notes below.