Slice the tempeh into thin pieces or cubes.
In a bowl, mix the soy sauce, olive oil, smoked paprika, maple syrup, garlic, and black pepper.
Marinate the sliced tempeh in the mixture for at least 10 minutes.
Heat a non-stick skillet over medium heat.
Add the marinated tempeh to the skillet without overcrowding.
Cook for about 5-7 minutes on each side until golden brown.
Remove the tempeh from the skillet and set aside.
In the same skillet, add mixed vegetables and sauté until tender.
Combine the tempeh with the vegetables and heat through.
Serve with fresh herbs and lemon wedges on the side.