Preheat oven to 400°F and line a baking sheet with parchment paper.
Toss cherry tomatoes with a small drizzle of the olive oil, sea salt, and black pepper on the prepared sheet.
Roast tomatoes for 15 minutes until they are blistered and fragrant.
While tomatoes roast, cook the whole grain pasta in a pot of boiling salted water until al dente, then drain.
Season the chicken breast with dried oregano, sea salt, and black pepper.
Heat the remaining olive oil in a skillet over medium-high heat and sauté the chicken until golden and cooked through.
Add the minced garlic to the skillet during the last minute of cooking, stirring constantly to avoid burning.
Slice the chicken into strips and combine with the cooked pasta, roasted tomatoes, lemon juice, lemon zest, and fresh parsley in the skillet.
Toss everything together over low heat for one minute to meld the flavors.
Serve immediately in a bowl topped with a sprinkle of parmesan cheese.