Spread green beans out on a sheet pan and toss with olive oil and some salt and pepper. Roast, shaking the pan halfway through cooking, until tender, 10 to 12 minutes.
While the green beans roast, heat a large skillet with the second portion of cooking oil over medium heat. Add salmon skin-side facing up and sear until the seasoning becomes a dark crust and the fish is nearly cooked all the way through, 2 to 4 minutes (depending on thickness). Flip salmon and sear the skin side until golden and crisp, ~2 minutes more.
Warm the tortillas according to package directions.
Shred the salmon and divide between tortillas. Top with pineapple salsa. Serve green beans on the side and squeeze lime wedges over everything. Enjoy!