Preheat a large skillet over medium-high heat. Once hot, add oil and swirl to coat the bottom; add steak and cook, flipping occasionally, 8-12 minutes, until internal product temperature reaches 160°F on a meat thermometer. Remove to a plate and loosely cover with aluminum foil to keep warm.
Meanwhile, wash and dry the fresh produce.
Trim, seed, and cut bell peppers into bite-sized pieces. Snap (or cut) off woody ends of the asparagus. Pick oregano leaves off the stems; discard stems and mince the leaves. Place veggies and oregano in a medium bowl.
Preheat another large skillet over medium-high heat. Once hot, add oil and swirl to coat the bottom. Add veggies, oregano, salt, and pepper. Cook, stirring occasionally, until veggies are fork-tender, 4-5 minutes. Remove from heat. (Reserve bowl for the next step.)
Meanwhile, quarter jalapeño peppers lengthwise; seed and remove ribs with a spoon to reduce spice level. Small dice and place in the reserved bowl. (Be careful with jalapeños; do not touch your eyes and ensure you wash your hands after handling or wear gloves while preparing.)
Shave cilantro leaves off the stems; discard stems and mince the leaves. Add to the bowl with the jalapeño along with oil, vinegar, and spices. Whisk to combine the dressing.
Drain and rinse beans in a colander. Add beans to the bowl with the dressing, stir to combine the salad, and set aside.
Thinly slice steak against the grain.
To serve, divide bean salad, veggies, and steak between plates. Enjoy!