Cook your grain: Make brown rice or quinoa according to package directions. Fluff and set aside.
This can be done a day ahead.
Prep the veggies: Toss broccoli and bell pepper with a drizzle of olive oil, salt, and pepper. Spread on a sheet pan.
Roast the veggies: Roast at 425°F (220°C) for 12–15 minutes, until crisp-tender with a little char. Pull from the oven and set aside.
Make the sauce: In a small bowl, whisk honey, soy sauce, vinegar, garlic, ginger, sesame oil, and red pepper flakes.
Stir in the cornstarch slurry and set aside.
Season the salmon: Pat salmon dry. Rub with 1 tablespoon olive oil, then season with salt, pepper, and smoked paprika.
Cook the salmon: Heat a large nonstick skillet over medium-high. Place salmon skin-side down and sear 3–4 minutes, then flip and cook another 2–3 minutes, until nearly cooked through.
Glaze it: Reduce heat to medium-low.
Pour the sauce into the pan around the salmon. Let it bubble and thicken, spooning over the fish for 1–2 minutes until glossy. Remove from heat.
Squeeze a little lemon on top.
Assemble meals: Divide rice or quinoa into 4 meal-prep containers. Add roasted veggies. Top each with a salmon fillet and spoon extra sauce over everything.
Garnish and cool: Sprinkle with sesame seeds and green onions.
Let containers cool uncovered for 15–20 minutes before sealing.
Store: Seal and refrigerate up to 4 days. Reheat gently when ready to eat.