Prepare marinade: mix oil, lemon sauce, ground red pepper and crushed garlic. Find good balance between oil and lemon sauce by tasting the mix and adjusting it, if necessary.

Cut chicken breasts into medium cubes. Put them into marinade, mix well. Make sure marinade covers chicken at least by 2/3rds, or more. Leave in a fridge for about an hour.

When chicken is marinated, fry it on a large fire until it is brownish. Then add broth or water and salt, reduce fire, cover with a lid, and cook it for 5-10 minutes.

Cook pasta. When it is almost ready, discard the water. Open the pan with chicken, switch fire to large, and wait until most water evaporates. Add pasta to the pan.

https://cookpad.wasmer.app/us/recipes/355982-how-to-cook-dry-pasta

Add butter to pasta, continue frying and stir constantly. Cook until butter dissolves, and all water evaporates. Serve.