Preheat oven to 425°F.
Place the steak, shrimp, peppers, onion, garlic and lemon/lime on a large sheet pan.
Drizzle with the olive oil and season with fajita spices, salt and pepper. Toss everything together until well coated in the spice mixture.
Bake for 10-12 minutes until the steak is tender and the shrimp are pink. (**see note)
Remove from the oven, slice the steak into thin strips then squeeze the lemon/lime wedges over everything before enjoying with warmed tortillas and fresh cilantro.
