Cut the chicken breast into bite-sized pieces.
Slice the garlic into thin pieces.
Cut broccoli and bell pepper into bite-sized pieces.
Boil the spaghetti noodles in salted water.
Heat olive oil in a pan and sauté the garlic.
Add the chicken breast and cook thoroughly.
Add broccoli and bell pepper and stir-fry.
Add the cooked pasta and a little pasta water, then mix well.
Season with salt and pepper.
Sprinkle with parsley to finish.