Toss the chicken with 1 tbsp olive oil, smoked paprika, garlic powder, oregano, salt, and pepper.
Heat a large skillet over medium-high heat and sear the chicken in a single layer until golden and cooked through, 6-7 minutes. Remove to a plate.
Add the remaining olive oil to the skillet, then add the zucchini and bell peppers. Sauté until just tender, about 5 minutes.
Stir in the corn, cherry tomatoes, and garlic. Cook 2-3 minutes until the tomatoes soften and the garlic is fragrant.
Return the chicken to the skillet, add the lemon juice, and toss everything together. Cook 1-2 minutes until heated through.
Garnish with fresh basil and feta if using. Serve immediately.