Begin by seasoning the chicken breasts with salt, pepper, smoked paprika, and dried thyme on both sides. Ensure they are well coated for maximum flavor.
In a large skillet, heat the olive oil over medium heat. Once hot, add the seasoned chicken breasts to the pan. Cook for about 5-7 minutes on each side, or until the chicken is golden brown and cooked through (internal temperature should reach 165°F). Remove the chicken from the skillet and set aside.
In the same skillet, add the minced garlic and sauté for 30 seconds until fragrant, being careful not to burn it.
Add the sliced zucchinis, yellow squash, and diced red bell pepper to the skillet. Sauté the vegetables for about 5-7 minutes, or until they are tender but still crisp.
Return the cooked chicken to the skillet, nestling it among the vegetables. Allow everything to cook together for an additional 2-3 minutes, so the flavors meld.
Taste and adjust seasoning with more salt, pepper, or thyme if desired.
Remove from heat and let it rest for a minute before serving. Garnish with fresh basil leaves for a pop of freshness.