In a shallow dish, combine smoked paprika, garlic powder, onion powder, oregano, thyme, cayenne, salt, and black pepper.
Press each tempeh slice into the spice mixture, ensuring all sides are heavily coated.
Heat 2 tablespoons of olive oil in a cast-iron skillet over medium-high heat until shimmering.
Add the tempeh slices to the skillet and sear for 3 to 4 minutes per side until the spices form a dark, crispy crust.
In a large mixing bowl, whisk together the lemon juice and extra virgin olive oil to create a light dressing.
Add the mixed greens, tomatoes, red onion, and cucumber to the bowl and toss to coat evenly with the dressing.
Divide the dressed salad onto plates and top with the warm blackened tempeh strips.