Preheat your oven to 425°F.
Prepare a shallow dish with the almond flour, grated parmesan, and a pinch of salt and pepper.
Whisk the egg in a separate bowl.
Dip the chicken breast first in the egg, then coat evenly with the almond flour and parmesan mixture.
Heat a non-stick skillet over medium heat and lightly sear the chicken on both sides until golden (about 2-3 minutes per side). The chicken will finish cooking in the oven.
While the chicken sears, chop the bell pepper, zucchini, and cherry tomatoes. Toss them with olive oil, salt, and pepper on a baking sheet.
Place the seared chicken breast on the baking sheet with the vegetables.
Roast everything in the oven for about 15-18 minutes, or until the chicken is cooked through and the vegetables are tender.
Plate the chicken with the roasted vegetables and serve immediately.